## Clausal Form in Deductive Databases

In clausal form, the formula is made up of a number of clauses, where each clause is composed of a number of literals connected by… Read More »

In clausal form, the formula is made up of a number of clauses, where each clause is composed of a number of literals connected by… Read More »

Prerequisite – Relational Algebra 1. Selection : This operation chooses the subset of tuples from the relation that satisfies the given condition mentioned in the… Read More »

Prerequisite – Relational Algebra We already are aware of the fact that relations are nothing but a set of tuples, and here we will have… Read More »

Prerequisite – Relational Algebra Select operation chooses the subset of tuples from the relation that satisfies the given condition mentioned in the syntax of selection.… Read More »

On modeling the design of the relational database we can put some restrictions like what values are allowed to be inserted in the relation, what… Read More »

Prerequisite – Relational Algebra in DBMS These Set Theory operations are the standard mathematical operations on set. These operations are Binary operation that is, these… Read More »

Both Relational Algebra and Relational Calculus are the formal query languages. Relational Algebra: Relational Algebra is a Procedural language. In Relational Algebra, The order is… Read More »

Prerequisite – Keys in Relational Model A primary key is a column of table which uniquely identifies each tuple (row) in that table. Primary key… Read More »

A data store is basically a place for storing collections of data, such as a database, a file system or a directory. In Database system… Read More »

In this article, Lets discuss common types of questions in relational algebra which are asked in GATE. Before reading this article, you should have idea… Read More »

Basics of Relational model: Relational Model Relational Algebra is a procedural query language which takes relations as an input and returns relation as an output.… Read More »

Basic idea about relational model and basic operators in Relational Algebra: Relational Model Basic Operators in Relational Algebra Extended operators are those operators which can… Read More »

Relational Algebra is procedural query language, which takes Relation as input and generate relation as output. Relational algebra mainly provides theoretical foundation for relational databases… Read More »