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What is RDBMS? RDBMS stands for  R elational  D atabase  M anagement  S ystem. RDBMS is the basis for SQL, and for all modern database systems like MS SQL Server, IBM DB2, Oracle, MySQL, and Microsoft Access. A Relational database management system (RDBMS) is a database management system (DBMS) that is based on the relational model as introduced by E. F. Codd. What is a table? The data in an RDBMS is stored in database objects which are called as  tables . This table is basically a collection of related data entries and it consists of numerous columns and rows. Remember, a table is the most common and simplest form of data storage in a relational database. The following program is an example of a CUSTOMERS table − +----+----------+-----+-----------+----------+ | ID | Name | Age | Address | Salary | +----+----------+-----+-----------+----------+ | 1 | Sachin | 40 | Mumbai | 20000.00 | | 2 | Dhoni | 34 |...

Introduction to SQL SQL is a standard language for accessing and manipulating databases. What is SQL? SQL stands for Structured Query Language SQL lets you access and manipulate databases SQL is an ANSI (American National Standards Institute) standard What Can SQL do? SQL can execute queries against a database SQL can retrieve data from a database SQL can insert records in a database SQL can update records in a database SQL can delete records from a database SQL can create new databases SQL can create new tables in a database SQL can create stored procedures in a database SQL can create views in a database SQL can set permissions on tables, procedures, and views Some of The Most Important SQL Commands SELECT  - extracts data from a database UPDATE  - updates data in a database DELETE  - deletes data from a database INSERT INTO  - inserts new data into a database CREATE DATABASE  - creates a new datab...