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What is a Phantom deadlock?

What is a Phantom deadlock?

In this blog, we will learn about a specific deadlock, i.e., Phantom deadlock, and will also see some examples of its occurrence.

Admin AfterAcademy 2 Jun 2020
What is Banker’s algorithm?

What is Banker’s algorithm?

In this blog, we will see one of the deadlock avoidance methods i.e. Banker's Algorithm. In this algorithm, we will discuss that if we are given the number of resources available and the number of resources required by the process then we can tell that if the system will go in deadlock or not. We will understand this concept with the help of an example.

Admin AfterAcademy 2 Jun 2020
What is the difference between TRUNCATE, DELETE and DROP statements?

What is the difference between TRUNCATE, DELETE and DROP statements?

In this blog, we will see the difference between the TRUNCATE, DELETE, and DROP statements that are used in MySQL.

Admin AfterAcademy 10 Feb 2020
What are Scalar functions?

What are Scalar functions?

In this blog, we will learn about some of the Scalar functions that are used in SQL.

Admin AfterAcademy 10 Feb 2020
What is Fragmentation and what are its types?

What is Fragmentation and what are its types?

In this blog, we will learn about the fragmentation problem that occurs during memory allocation. We will also study the types of fragmentation i.e. internal fragmentation and external fragmentation.

Admin AfterAcademy 30 Mar 2020
What are the various types of constraints in SQL?

What are the various types of constraints in SQL?

In this blog, we will learn various types of constraints that can be applied on a table. These constraints can be used to validate the data present in the table. We will learn about NOT NULL, UNIQUE, PRIMARY KEY, FOREIGN KEY, CHECK, and DEFAULT

Admin AfterAcademy 10 Feb 2020
What are aggregate functions?

What are aggregate functions?

In this blog, we will learn about some of the aggregate functions that are used in SQL. These aggregate functions take more than one value and return one value as a result.

Admin AfterAcademy 10 Feb 2020
What is a Thread in OS and what are the differences between a Process and a Thread?

What is a Thread in OS and what are the differences between a Process and a Thread?

In this blog, we will learn about threads and its two types i.e. user-level thread and kernel-level thread. We will also see what are the advantages of using threads in the OS. Finally, we will learn about the difference between process and thread

Admin AfterAcademy 1 May 2020
What is the concept of Multithreading in OS and what are its benefits?

What is the concept of Multithreading in OS and what are its benefits?

In this blog, we will learn about various multithreading models like one-to-one, many-to-one, and many-to-many. We will compare these models and analyze which one is the best. Further, we will also see the benefits of multithreading.

Admin AfterAcademy 1 May 2020
What is the difference between SQL and SQL server?

What is the difference between SQL and SQL server?

In this blog, we will learn about the various differences between SQL and SQL server based on some points.

Admin AfterAcademy 1 May 2020
What is Pattern matching in SQL and how it is done?

What is Pattern matching in SQL and how it is done?

In this blog, we will see what is pattern matching in SQL. We will also learn to perform pattern matching with examples.

Admin AfterAcademy 22 Apr 2020
What are Paging and Segmentation?

What are Paging and Segmentation?

In this blog, we will learn about two non-contiguous memory allocation technique i.e. paging and segmentation. We will also learn how the logical address is converted into the physical address in both the techniques. Further, we will analyze the advantages and disadvantages of each technique.

Admin AfterAcademy 22 Apr 2020
What are demand-paging and pre-paging?

What are demand-paging and pre-paging?

In this blog, we will learn how pages are brought into the main memory in virtual memory systems. We will see two ways of doing this i.e. demand paging and pre-paging.

Admin AfterAcademy 22 Apr 2020
What is Belady’s Anomaly?

What is Belady’s Anomaly?

In this blog, we will learn what is Belady's anomaly and we will analyze how increasing the frame number leads to Beladys Anomaly in FIFO.

Admin AfterAcademy 7 Apr 2020
What is the difference between logical and physical address wrt Operating System?

What is the difference between logical and physical address wrt Operating System?

In this blog, we will learn about the two types of addresses that are used for memory in the operating system. Further, we will discuss the difference among these types of memories i.e. logical memory and physical memory.

Admin AfterAcademy 30 Mar 2020
What are UNION, MINUS, and INTERSECT commands in DBMS?

What are UNION, MINUS, and INTERSECT commands in DBMS?

In this blog, we will learn what are the UNION, MINUS, and INTERSECT commands in SQL. We will also see their application with examples.

Admin AfterAcademy 6 Apr 2020
What is Cross-Join in DBMS?

What is Cross-Join in DBMS?

In this blog, we will learn how to cross-join two tables in DBMS, and what are the benefits of doing it with example.

Admin AfterAcademy 6 Apr 2020
Difference between IPv4 and IPv6

Difference between IPv4 and IPv6

In this blog, we will discuss IPv4 and IPv6 versions of IP address. We will also discuss in details about their packet formats and finally see the differences among them.

Admin AfterAcademy 29 Feb 2020
What is View in SQL?

What is View in SQL?

In this blog, we will learn about the view or virtual tables in SQL. We will also discuss various operations we can perform on views in SQL.

Admin AfterAcademy 3 Mar 2020
Difference between Trigger and Stored procedure in DBMS

Difference between Trigger and Stored procedure in DBMS

In this blog, we will learn how triggers are different from stored procedures.

Admin AfterAcademy 16 Mar 2020
What is a transaction? What are ACID properties?

What is a transaction? What are ACID properties?

In this blog, we will learn what is a transaction, what are the transaction states. We will also learn about the ACID properties that are followed by all the transactions taking place in the database.

Admin AfterAcademy 16 Mar 2020
What is the difference between TCP and UDP?

What is the difference between TCP and UDP?

In this blog, we will first briefly understand TCP and UDP, and then we will see the dissimilarities between them. We'll also see which one is better to implement in which case.

Admin AfterAcademy 18 Feb 2020
What is the concept of Subnetting and Supernetting?

What is the concept of Subnetting and Supernetting?

In this blog, we will learn about the concept of subnetting, why it is done and how it is done. Further, we will learn about supernetting, why it is done and how it is done. We will also see how the supernet mask of any network is calculated.

Admin AfterAcademy 29 Feb 2020
What is a Subnet mask?

What is a Subnet mask?

In this blog, we will learn why we need a subnet mask, what is a subnet mask and how a subnet mask helps in identifying the network of the IP address.

Admin AfterAcademy 29 Feb 2020
What is a Stored Procedure in DBMS?

What is a Stored Procedure in DBMS?

In this blog, we will learn what is a stored procedure in DBMS, and how it is executed depending on the number of parameters passed.

Admin AfterAcademy 21 Mar 2020
What is Self-Join in DBMS?

What is Self-Join in DBMS?

In this blog, we will learn how to join a table by itself, and what are the benefits of self-join with example.

Admin AfterAcademy 21 Mar 2020
What is Pipelining?

What is Pipelining?

In this blog, we will learn what is pipelining. We will also see the application and features of using pipelining in computer networks.

Admin AfterAcademy 29 Feb 2020
What are the Page Replacement Algorithms?

What are the Page Replacement Algorithms?

In this blog, we will learn about various Page Replacement Algorithms that are used in memory management in OS. We will learn about FIFO, LRU, and Optimal page replacement.

Admin AfterAcademy 29 Feb 2020
What is the difference between OLTP and OLAP?

What is the difference between OLTP and OLAP?

In this blog, we will first discuss what is Online Transaction Processing and Online Analytical Processing and then learn the difference among them.

Admin AfterAcademy 21 Mar 2020
What is a Network Operating System?

What is a Network Operating System?

In this blog, we'll learn about the Network Operating System and its various features. We'll also see the types of Network Operating System, their advantages, and disadvantages.

Admin AfterAcademy 29 Feb 2020
Multiprogramming vs Multiprocessing vs Multitasking

Multiprogramming vs Multiprocessing vs Multitasking

In this blog, we will learn the difference between Multiprogramming, Multiprocessing, and Multitasking. These terms come into play when we talk about our processes and the processors. Let's see the difference between these.

Admin AfterAcademy 3 Nov 2019
What is the maximum segment length of a 100Base-FX network?

What is the maximum segment length of a 100Base-FX network?

In this blog, we will learn what are the pieces of information hidden in the name of the network like 100BaseFX. We will learn about 100baseFX and what is its maximum segment length.

Admin AfterAcademy 29 Feb 2020
What is the difference between MAC address and IP address?

What is the difference between MAC address and IP address?

In this blog, we will first learn about the MAC and IP addresses in brief. And then, we'll see the dissimilarities between the two.

Admin AfterAcademy 18 Feb 2020
What is a localhost?

What is a localhost?

In this blog, we will learn what is localhost. We will also learn various applications of the localhost.

Admin AfterAcademy 29 Feb 2020
What is Join in DBMS and what are its types?

What is Join in DBMS and what are its types?

In this blog, we will learn how to join two tables in DBMS. We will also learn about the various types of joins, mainly the inner and the outer join.

Admin AfterAcademy 21 Mar 2020
Difference between ipconfig and ifconfig?

Difference between ipconfig and ifconfig?

In this blog, we will learn what is ipconfig and ifconfig. We'll also see the application and differences between the two.

Admin AfterAcademy 29 Feb 2020
What is an IP address?

What is an IP address?

In this blog, we will learn what is an Ip address and what are the various versions of IP addresses being used. We will also discuss what are the types of IP addresses depending upon how they are assigned to any system.

Admin AfterAcademy 29 Feb 2020
What are ICMP and IGMP protocols?

What are ICMP and IGMP protocols?

In this blog, we will learn about what is ICMP protocols and various messages involved with this protocol. We will also discuss the IGMP protocol of the TCP/IP and various versions of this protocol.

Admin AfterAcademy 29 Feb 2020
What is the difference between HAVING and WHERE clause?

What is the difference between HAVING and WHERE clause?

In this blog, we will learn how WHERE and HAVING clause are used and then see what are the main differences between the WHERE clause and HAVING clause.

Admin AfterAcademy 29 Feb 2020
What can be done to fix signal attenuation problems?

What can be done to fix signal attenuation problems?

In this blog, we will learn what is attenuation, what are the causes of attenuation and finally we saw what can be done to fix the signal attenuation problem.

Admin AfterAcademy 29 Feb 2020
Difference between a Firewall and Antivirus

Difference between a Firewall and Antivirus

In this blog, we will learn about what is an antivirus and how does it work. We will then discuss the dissimilarities between the firewall and antivirus.

Admin AfterAcademy 18 Feb 2020
Difference between a Domain and a Workgroup

Difference between a Domain and a Workgroup

In this blog, we will learn what is a domain and a workgroup. We will also see the application and the differences between the two.

Admin AfterAcademy 3 Mar 2020
What is DNS?

What is DNS?

In this blog, we will learn about the Domain Name System(DNS) and its need. We'll also see the working and various types of DNS.

Admin AfterAcademy 29 Feb 2020
What is a Deadlock in DBMS and what are the deadlock avoidance, detection, and prevention techniques?

What is a Deadlock in DBMS and what are the deadlock avoidance, detection, and prevention techniques?

In this blog, we will learn what is a deadlock situation, what are various deadlock handling techniques like deadlock prevention, deadlock avoidance, deadlock detection, and deadlock ignorance.

Admin AfterAcademy 21 Mar 2020
What is Data independency?

What is Data independency?

In this blog, we will learn about data independence and how it helps in doing modification in the database. Further, we will discuss its two types on the basis of levels of abstraction in DBMS.

Admin AfterAcademy 21 Mar 2020
What is Data Encapsulation and de-encapsulation in networking?

What is Data Encapsulation and de-encapsulation in networking?

In this blog, we will learn what is data encapsulation in the computer network. We will also see the encapsulation and de-encapsulation process in the OSI and TCP/IP models.

Admin AfterAcademy 4 Mar 2020
What are the classes of IPV4? How to identify IP class from a given IP address?

What are the classes of IPV4? How to identify IP class from a given IP address?

In this blog, we will learn what are the various types of classes in IPv4 and how we can differentiate among the classes on the basis of the number of bits present the network ID and the host ID of these classes.

Admin AfterAcademy 29 Feb 2020
What happens when you use cables longer than the prescribed length in a network?

What happens when you use cables longer than the prescribed length in a network?

In this blog, we will see what happens when we use a cable longer than the prescribed length in the network. We will also see whether it is favorable for the network or not.

Admin AfterAcademy 4 Mar 2020
What is a Trigger in DBMS?

What is a Trigger in DBMS?

In this blog, we will learn why a trigger is needed, what is it, what are the advantages and disadvantages of using a trigger.

Admin AfterAcademy 4 Mar 2020
Which model is better, OSI or TCP/IP?

Which model is better, OSI or TCP/IP?

In this blog, we have described the similarities and dissimilarities between the OSI and TCP/IP models. We've also tried to tell which model is better for which scenario.

Admin AfterAcademy 11 Feb 2020
What is RIP(Routing Information Protocol)?

What is RIP(Routing Information Protocol)?

In this blog, we will learn about what is RIP and how does it work. We will also discuss what are versions of RIP and various RIP timers. In last will see the advantages and disadvantages of this protocol.

Admin AfterAcademy 10 Feb 2020
What do you mean by a Firewall?

What do you mean by a Firewall?

In this blog, we will what is a firewall, why is it important, how it works, what are its types, and how it protects our network from threats from the internet.

Admin AfterAcademy 10 Feb 2020
What is the TCP/IP model and how it works?

What is the TCP/IP model and how it works?

In this blog, we will mainly learn about the TCP/IP model and its working in detail. We'll focus on the features and working of each layer of the TCP/IP model.

Admin AfterAcademy 10 Feb 2020
What is a TCP 3-way handshake process?

What is a TCP 3-way handshake process?

In this blog, we will learn about the TCP protocol and the 3-way handshake process involved in it.

Admin AfterAcademy 10 Feb 2020
What are Proxy Servers and how do they protect computer networks?

What are Proxy Servers and how do they protect computer networks?

In this blog, we will learn what is a proxy server, how does it work and what are the various types of proxy servers. We will also see why we should use a proxy server and what are the risks associated with it.

Admin AfterAcademy 10 Feb 2020
What is the OSI model and how it works?

What is the OSI model and how it works?

In this blog, we will mainly learn about the OSI model and its working in detail. We'll focus on the features and working of each layer of the OSI model.

Admin AfterAcademy 7 Feb 2020
What is ARP and how does it work?

What is ARP and how does it work?

In this blog, we will learn what is Address Resolution Protocol and how it helps in communication between two devices. We will also discuss what are the problems that can arise while using this protocol and see sample examples of ARP packets which are captured.

Admin AfterAcademy 7 Feb 2020
What is DHCP and how does it work?

What is DHCP and how does it work?

In this blog, we will learn what is DHCP, what are various entities related to DHCP and how does it work. We will also discuss how IP configurations are dynamically done.

Admin AfterAcademy 6 Feb 2020
What happens when you type a URL in the web browser?

What happens when you type a URL in the web browser?

In this blog, we will learn what happens when type any URL in the address box of a web browser. We will see step by step, how the HTTP request is sent and the HTTP response is received.

Admin AfterAcademy 6 Feb 2020
What is a NIC(Network Interface Card)?

What is a NIC(Network Interface Card)?

In this blog, we will learn what is a Network Interface Card, what are its types, what are the various factors that determine the speed of the internet along with the Network Interface Cards speed.

Admin AfterAcademy 6 Feb 2020
What is FTP and how does an FTP work?

What is FTP and how does an FTP work?

In this blog, we will learn what is an FTP protocol, how does it works, what are various modes in which it works, what are the advantages and disadvantages of using it.

Admin AfterAcademy 6 Feb 2020
What is Piggybacking?

What is Piggybacking?

In this blog, we will learn why piggybacking is used and how it helps in increasing the efficiency of data transmission. We will also discuss the advantages and disadvantages of piggybacking.

Admin AfterAcademy 4 Feb 2020
What is Stop and Wait protocol?

What is Stop and Wait protocol?

In this blog, we will learn one of the flow control method i.e Stop and Wait Protocol. We will discuss various situations that can occur while transmitting the data. We will also mathematically derive the efficiency and the throughput of this protocol.

Admin AfterAcademy 4 Feb 2020
What is the difference between Unicasting, Anycasting, Multicasting, and Broadcasting?

What is the difference between Unicasting, Anycasting, Multicasting, and Broadcasting?

In this blog, we will learn about the various network traffic types, that are - Unicasting, Anycasting, Multicasting, and Broadcasting. We'll also see their advantages and disadvantages along with their differences.

Admin AfterAcademy 4 Feb 2020
What is Error-Control in networking?

What is Error-Control in networking?

In this blog, we will discuss what is an error, what are its types, how to detect these errors. We will also know about are various error control techniques like stop and wait ARQ, Go-Back-N ARQ, and Selective Repeat ARQ.

Admin AfterAcademy 4 Feb 2020
What are various Message switching techniques?

What are various Message switching techniques?

In this blog, we will learn about various messaging techniques like circuit switching, packet switching, and message switching. We will also discuss their applications in the real world.

Admin AfterAcademy 4 Feb 2020
What are the different types of SQL commands?

What are the different types of SQL commands?

In this blog, we will learn about various SQL commands such as DDL, DML, TCL, DCL.

Admin AfterAcademy 23 Jan 2020
What are Gateways?

What are Gateways?

In this blog, we'll learn about gateways, their working, features, advantages and disadvantages.

Admin AfterAcademy 23 Jan 2020
What are Routers, Hubs, Switches, Bridges?

What are Routers, Hubs, Switches, Bridges?

In this blog, we'll learn about the networking devices such as Routers, Hubs, Switches, and Bridges. We'll also learn about the functionality, advantages, and disadvantages of these devices.

Admin AfterAcademy 22 Jan 2020
What is a Query and Subquery in DBMS?

What is a Query and Subquery in DBMS?

In this blog, we will learn about Queries and SubQueries that are used to perform operations on some database.

Admin AfterAcademy 22 Jan 2020
Can you connect two computers for file sharing without using a hub or router?

Can you connect two computers for file sharing without using a hub or router?

In this blog, we will see if we can connect two computers without using any hub or router. We will also see if this is possible then how this is done step by step.

Admin AfterAcademy 22 Jan 2020
What is the difference between SQL and NoSQL?

What is the difference between SQL and NoSQL?

In this blog, we will learn the difference between SQL and NoSQL databases.

Admin AfterAcademy 21 Jan 2020
What is an embedded and dynamic SQL?

What is an embedded and dynamic SQL?

In this blog, we will learn the difference between the embedded and dynamic SQL in deatail. We will also see which SQL statement to use when?

Admin AfterAcademy 19 Jan 2020
What is the difference between SQL and MySQL?

What is the difference between SQL and MySQL?

In this blog, we will learn the difference between SQL and MySQL. People use these terms intechangeably. But both are having different meanings.

Admin AfterAcademy 19 Jan 2020
What is SQL?

What is SQL?

In this blog, we will learn about SQL. We will see the definition of SQL and various processes that are involved in the query processing of some SQL query.

Admin AfterAcademy 19 Jan 2020
What is Denormalization in DBMS?

What is Denormalization in DBMS?

In this blog, we will learn what is denormalization and why do we need it. We will also see the advantages and disadvantages of denormalization.

Admin AfterAcademy 19 Jan 2020
What is Specialization in DBMS?

What is Specialization in DBMS?

In this blog, we will learn about the specialization which is a feature of extended E-R diagram with the help of an example.

Admin AfterAcademy 19 Jan 2020
What is Generalization in DBMS?

What is Generalization in DBMS?

In this blog, we will learn about the feature of an extended E-R diagram called Generalization where we will see how two or more entity types cn be clubbed together to form a new entity type.

Admin AfterAcademy 19 Jan 2020
What is Flow-Control in networking?

What is Flow-Control in networking?

In this blog, we will learn what is flow control, what happens when the sender and receiver work at a different speed. We will also discuss the flow control methods to control the flow of data between the sender and the receiver.

Admin AfterAcademy 19 Jan 2020
What is network topology and types of network topology?

What is network topology and types of network topology?

In this blog, we will learn about various network topologies, their advantages and disadvantages in a computer network.

Admin AfterAcademy 19 Jan 2020
What are the Data Transmission Modes in a network?

What are the Data Transmission Modes in a network?

In this blog, we will learn about different data transmission modes based on the direction of exchange, synchronization between the transmitter and receiver, and the number of bits sent simultaneously in a computer network.

Admin AfterAcademy 19 Jan 2020
What are Peer-to-Peer networks and Server-Based networks?

What are Peer-to-Peer networks and Server-Based networks?

In this blog, we will learn about the types of network based on design, that are Peer-to-Peer, and Server-Based networks. We will also see the applications, advantages, and disadvantages of using these networks.

Admin AfterAcademy 8 Jan 2020
What is the difference between Primary key and Unique key?

What is the difference between Primary key and Unique key?

In this blog, we will learn what are unique keys and what is the need for unique keys. We will also discuss various points on which the unique key differ from a primary key.

Admin AfterAcademy 7 Jan 2020
What are Super key, Primary key, Candidate key, and Foreign keys?

What are Super key, Primary key, Candidate key, and Foreign keys?

In this blog, we will learn about the various keys like the super key, candidate key, primary key, alternate key and foreign key. We will discuss how to identify and differentiate between them with examples.

Admin AfterAcademy 5 Jan 2020
What are the different types of network?

What are the different types of network?

In this blog, we will learn about the various classification of networks based on their geographical area, media used, ownership, and functionality.

Admin AfterAcademy 30 Dec 2019
What is an attribute?

What is an attribute?

In this blog, we will learn what is an attribute, its various types and symbols used to represent them. We will see various types of attributes such as single & multi-valued attributes, simple & composite attribute, stored & derived attribute and key attribute.

Admin AfterAcademy 30 Dec 2019
What is the degree of relation in DBMS?

What is the degree of relation in DBMS?

In this blog, we will learn about the degree of relationship in DBMS. We will also see what are its types depending upon various degree possible and discuss what is the maximum and minimum degree possible in relation.

Admin AfterAcademy 30 Dec 2019
What are the different types of relationships in DBMS?

What are the different types of relationships in DBMS?

In this blog, we will study various types of relationships in DBMS which help in defining the association between various entities. Also, we will discuss the types of participation constraints which may exist between the relationship and the entity type.

Admin AfterAcademy 27 Dec 2019
Differentiate between Weak and Strong entity

Differentiate between Weak and Strong entity

In this blog, we will see the difference between a strong and a weak entity. We will also see various terms which are used to describe a strong and weak entity with the help of in-depth examples.

Admin AfterAcademy 26 Dec 2019
What is an Entity, Entity Type and Entity Set?

What is an Entity, Entity Type and Entity Set?

In this blog, we will learn what is an entity, entity type and entity set and how these terms are related. We will learn the difference between these terms as these terms are often used interchangeably. We will take various examples to understand this.

Admin AfterAcademy 23 Dec 2019
What is an E-R model?

What is an E-R model?

In this blog, we will see how an ER model is used in database designing. We will also see how an ER model is made using various components of the ER diagram. We will also discuss the features of an ER model along with its advantages and disadvantages.

Admin AfterAcademy 19 Dec 2019
What is a Schema?

What is a Schema?

In this blog, we will be learning what is a schema in the database. Also, we will study about various types of schema and how it is related to data abstraction. We will take various examples to understand this in detail.

Admin AfterAcademy 17 Dec 2019
What is relational algebra?

What is relational algebra?

In this blog, we are going to learn about various operations that are available in relational algebra and how they are going to help us to retrieve the data from the database with the help of examples.

Admin AfterAcademy 16 Dec 2019
What is a network and what are the nodes present in a network?

What is a network and what are the nodes present in a network?

In this blog, we will mainly learn about a computer network and its node. We will also cover the classification, goals, and applications of a computer network.

Admin AfterAcademy 16 Dec 2019
What is Data Integrity?

What is Data Integrity?

In this blog, we are going to learn what is data integrity. We will also learn that why data integrity is important and how we can achieve it using various integrity constraints.

Admin AfterAcademy 13 Dec 2019
What is Data Abstraction in DBMS and what are its three levels?

What is Data Abstraction in DBMS and what are its three levels?

In this blog, we will learn about data abstraction and how it achieved using its three levels. We will learn the working of all the three levels of data abstraction.

Admin AfterAcademy 12 Dec 2019
What is Data Model in DBMS and what are its types?

What is Data Model in DBMS and what are its types?

In this blog, we will learn about various data models present in DBMS. We will also learn about various types of data models present along with advantages and disadvantages of each model.

Admin AfterAcademy 11 Dec 2019
What is a Database Management System and how is it different from a File System?

What is a Database Management System and how is it different from a File System?

In this blog, we will learn what is DBMS and a traditional file system. We will also dive deep and understand the problems of the file system and get to know how DBMS resolved these problems.

Admin AfterAcademy 6 Dec 2019
What is the difference between DBMS and RDBMS?

What is the difference between DBMS and RDBMS?

In this blog, we will learn what is RDBMS and how it is different from DBMS. People often use these words intechangeably. But there is a difference between these two terms. So, let's learn how.

Admin AfterAcademy 10 Dec 2019
What is a Database and DBMS?

What is a Database and DBMS?

In this blog, we will learn what is database and database management system, its characteristics, advantages and disadvantages.

Admin AfterAcademy 4 Dec 2019
What are Protocols and what are the key elements of protocols?

What are Protocols and what are the key elements of protocols?

In this blog, we will learn about Protocols. We will also learn about the types, key elements, and functionalities of protocols used in computer network and data communication.

Admin AfterAcademy 6 Dec 2019
What is a VPN? Explain its working

What is a VPN? Explain its working

In this blog, we will learn about Virtual Private Network or VPN. We will learn about the working of a VPN and we will also learn about some of the advantages and disadvantages of a VPN.

Admin AfterAcademy 5 Dec 2019
The Reader-Writer Problem in Operating System

The Reader-Writer Problem in Operating System

In this blog, we will learn about the classic reader-writer problem in Operating System. We will also see how to remove this problem in Operating System.

Admin AfterAcademy 17 Nov 2019
The Producer-Consumer problem in Operating System

The Producer-Consumer problem in Operating System

In this blog, we will learn about the Producer-Consumer problem in Operating System and we will also learn how to solve this problem. It is used in multi-process synchronization.

Admin AfterAcademy 16 Nov 2019
What is semaphore and what are its types?

What is semaphore and what are its types?

In this blog, we will learn about semaphores and we will also see the types of semaphore. We will see how semaphores can be used to achieve process synchronization.

Admin AfterAcademy 14 Nov 2019
What is Process Synchronization in Operating System?

What is Process Synchronization in Operating System?

In this blog, we will learn about Process Synchronization in Operating System. Process Synchronization is used to deal with critical section problem.

Admin AfterAcademy 13 Nov 2019
Difference between Scheduler and Dispatcher

Difference between Scheduler and Dispatcher

In this blog, we will learn about Dispatchers in Operating System and we will also learn the difference between a Scheduler and a Dispatcher.

Admin AfterAcademy 12 Nov 2019
Process scheduling algorithms in the Operating System

Process scheduling algorithms in the Operating System

In this blog, we will learn about various process scheduling algorithms used in Operating System. We will learn about FCFS, SJF, SRTF, Round-Robin, Priority-based, Highest Response Ratio Next, Multilevel Queue, and Multilevel Feedback Queue scheduling.

Admin AfterAcademy 12 Nov 2019
What is the difference between Preemptive and Non-Preemptive scheduling?

What is the difference between Preemptive and Non-Preemptive scheduling?

In this blog, we will learn about Preemptive and Non-Preemptive Scheduling. We will also look at the difference between these two.

Admin AfterAcademy 12 Nov 2019
Process Control Block in Operating System

Process Control Block in Operating System

In this blog, we will learn about Process Control Block also known as PCB and we will see various attributes that are present in the Process Control Block.

Admin AfterAcademy 11 Nov 2019
What is a Process in Operating System and what are the different states of a Process?

What is a Process in Operating System and what are the different states of a Process?

In this blog, we will learn about Process in Operating System and we will also learn about the various states of a Process during its life cycle.

Admin AfterAcademy 11 Nov 2019
What is Spooling in Operating System?

What is Spooling in Operating System?

In this blog, we will learn what is Spooling in Operating System and what are the advantages of using Spooling. We will also see how we can use Spooling to imporve the performance of the system.

Admin AfterAcademy 11 Nov 2019
What is Kernel in Operating System and what are the various types of Kernel?

What is Kernel in Operating System and what are the various types of Kernel?

In this blog, we will learn about Kernel in Operating System and we will also learn about the various types of kernel.

Admin AfterAcademy 11 Nov 2019
What is the difference between a Multicore System and a Multiprocessor System?

What is the difference between a Multicore System and a Multiprocessor System?

In this blog, we will learn about the Multicore and Multiprocessor Systems and we will also see the difference between these two confusing terms.

Admin AfterAcademy 11 Nov 2019
What is Long-Term, Short-Term, and Medium-Term Scheduler?

What is Long-Term, Short-Term, and Medium-Term Scheduler?

In this blog, we will learn about long-term, short-term, and medium-term schedulers in the Operating System. We will also look at the difference between these three.

Admin AfterAcademy 5 Nov 2019
What is an Operating System and what are the goals and functions of an Operating System?

What is an Operating System and what are the goals and functions of an Operating System?

In this blog, we will learn what an Operating System is and what are the goals of an Operating System. We will also learn the functionalities of an Operating System that helps in achieving the goal of the OS.

Admin AfterAcademy 10 Nov 2019
What is Virtual Memory and how is it implemented?

What is Virtual Memory and how is it implemented?

In this blog, we will learn about the concept of Virtual Memory and we will also see how this concept of Virtual Memory can be implemented.

Admin AfterAcademy 9 Nov 2019
Difference between Mutex and Semaphore in Operating System

Difference between Mutex and Semaphore in Operating System

In this blog, we will learn about the difference between Mutex and Semaphore in the Operating System. We will first learn about Mutex and Semaphore and after that, we will find the difference between them.

Admin AfterAcademy 9 Nov 2019
What is Deadlock and what are its four necessary conditions?

What is Deadlock and what are its four necessary conditions?

In this blog, we will learn about the concept of deadlock in the Operating System and we will also see what are the four necessary conditions of deadlock. Let's learn.

Admin AfterAcademy 8 Nov 2019
What are Deadlock handling techniques in Operating System?

What are Deadlock handling techniques in Operating System?

In this blog, we will learn four techniques of deadlock handling i.e. deadlock prevention, deadlock avoidance, deadlock detection and recovery, and deadlock ignorance. So, let's learn about these.

Admin AfterAcademy 8 Nov 2019
What is Context Switching in Operating System?

What is Context Switching in Operating System?

In this blog, we will learn about the Context Switching in the Operating System. We will learn all the steps involved in Context Switching and in the end, we will see the advantages and disadvantages of Context Switching also.

Admin AfterAcademy 6 Nov 2019
What is Starvation and Aging?

What is Starvation and Aging?

In this blog, we will learn about the problem that arises in priority scheduling algorithm i.e. starvation and we will also learn the solution of the same i.e. Aging.

Admin AfterAcademy 4 Nov 2019
What is Burst time, Arrival time, Exit time, Response time, Waiting time, Turnaround time, and Throughput?

What is Burst time, Arrival time, Exit time, Response time, Waiting time, Turnaround time, and Throughput?

In this blog, we will learn about various types of times that we come across during using some CPU scheduling algorithms i.e. Burst time, Arrival time, Exit time, Response time, Waiting time, Turnaround time, and Throughput.

Admin AfterAcademy 3 Nov 2019

Connect With Your Mentors

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Janishar Ali
Founder | IIT-BHU | 10 Yrs Exp.
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Amit Shekhar
Founder | IIT-BHU | 10 Yrs Exp.