Relational Database Management System (RDBMS)

Relational Database Management System (RDBMS)

A relational database is a collection of data elements that are linked together by pre-defined relationships. These elements are laid down in a table format with columns and rows. Tables store data about the things that will be represented in the database. A field keeps the actual value of an attribute, while each column in […]

Database Keys – Primary Key – Foreign Key – Unique key

Database Management System (DBMS) Explained

What are Database Keys? Database Keys are attribute that helps you to identify a row(tuple) in a relation(table). They allow you to find the relationship between two tables. Keys help you uniquely identify a row in a table by a combination of one or more columns in that table. The database key is also helpful […]

DBMS- Relational Data Model

DBMS- Relational Data Model

  The relational model for database management is a method of managing data that employs a structure and language that are consistent with first-order predicate logic. It was first described in 1969 by English computer scientist Edgar F. Codd.   What is Relational Model? Relational Data Model (RM) represents the database as a collection of relations. […]

Database Management System (DBMS) Explained

Database Management System (DBMS) Explained

DBMS (Database Management System) plays a major role in software engineering. In each industry, from smaller firms to higher-level organizations which uses softwares, must need DBMS for data management which can be only operated by a person who knows DBMS very well. So there are huge opportunities for the people who have a better knowledge […]