DBI202

A ____ is a logically coherent collection of data with some inherent meaning, representing some aspect of real world and being designed, built and populated with data for a specific purpose

• Database

• Database Instance

• Schema

• Schema Instance

Choose the most correct statement.

• a.Database is created and maintained by a DMBS

• b.All of the others

• c.Database is a collection of data that is managed by a DBMS

• d. Database is a collection of information that exists over a long period of time

Which of following is never used as a data model?

• a. Hierarchical data model

• b. None of the others

• c. Graph-based data model

• d. Tree-based data model

• e. Relational data model

A ____ is a relation name, together with the attributes of that relation.

• a. schema

• b. database

• c. database instance

• d. schema instance

A ___ is a notation for describing the structure of the data in a database, along with the constraints on that data

• a. data model

• b. database management system

• c. data operation

• d. data manipulation