Data Manipulation Language (DML) is a language that enables users to access or manipulate data as organised by the appropriate data model. The types of access are : 1. Retrieval of information stored in the database2. Insertion of information stored in the database3. Deletion of information stored in the database4. Modification of information stored in …
Database schema is expressed by a set of definitions and these definitions are expressed by DDL (Data Definition Language). DDL is also used to specify additional properties of data. Data Storage and Definition Language : It is a special type of DDL. The set of statements used for, storage structure and access methods used by …
DBMS : A database management system is a collection of interrelated data and a set of programs to access those data. The primary goal of a DBMS is to provide a way to store and retrieve database information that is both convenient and efficient. Data Abstraction :Database Management system should be efficient and simpler to …