Which one of the following is used to define the structure of the relation ,deleting relations and relating schemas ?
A. DML(Data Manipulation Langauge)
B. DDL(Data Definition Langauge)
C. Query
D. Relational Schema
Answer:A
Which one of the following is used to define the structure of the relation ,deleting relations and relating schemas ?
A. DML(Data Manipulation Langauge) B. DDL(Data Definition Langauge) C. Query D. Relational Schema
Explanation: Data Definition language is the language which performs all the operation in defining structure of relation. 2. Which one of the following provides the ability to query information from the database and to insert tuples into, delete tuples from, and modify tuples in the database ?