6. The database schema is written in :
(a) HLL
(b) DML
(c) DDL
(d) DCL
7. In an E-R diagram attributes are represented by :
(a) rectangle.
(b) square.
(c) ellipse.
(d) triangle.
8. ‘AS’ clause is used in SQL for :
(a) Selection operation.
(b) Rename operation.
(c) Join operation.
(d) Projection operation.
9. The language used in application programs to request data from the DBMS is referred to as the :
(a) DML
(b) DDL
(c) VDL
(d) SDL
10. A relational database developer refers to a record as :
(a) a criteria.
(b) a relation.
(c) a tuple.
(d) an attribute.
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Relational Model » Exercise - 13. A Foreign Key is : (a) A field in a table that matches a key field in another table. (b) A field in a table that has the same name as a key field in another table. (c) A field in a table that contains data that is also contained elsewhere in another table. (d) None of these- Relational Model » Exercise - 14. The full form of DDL is : (a) Dynamic Data Language (b) Detailed Data Language (c) Data Definition Language (d) Data Derivation Language
- Relational Model » Exercise - 19. The language used in application programs to request data from the DBMS is referred to as the : (a) DML (b) DDL (c) VDL (d) SDL
- Relational Model » Exercise - 16. The database schema is written in : (a) HLL (b) DML (c) DDL (d) DCL
- Relational Model » Exercise - 15. DML is provided for : (a) Description of logical structure of database. (b) Addition of new structures in the database system. (c) Manipulation & processing of database. (d) Definition of physical structure of database system.