(A) DCL
(B) DML
(C) DDL
(D) None of the above
Tag: DBMS Mcq
What does the abbreviation DBMS stand for?
(A) Database Manipulation Software
(B) Data Borrowing and Movement Software
(C) Digital Base Mapping System
(D) Database Management System
DML does not used to?
(A) Add new rows to tables
(B) Retrieve row from tables
(C) Modify the rows of tables
(D) Alter a table definition
A relational database system is based on the concept of:
(A) A network of data records
(B) Nested tables
(C) Tables, rows and columns
(D) A tree-like structure of data
The Entity Relation Model models:
(A) Entities, Relationships and Processes
(B) Entities and Relationships
(C) Relationships
(D) Entities
Which of the following is not a component of a DFD?
(A) Dataflow
(B) Datastore
(C) External entities
(D) Relationship between external entities
A primary key is an attribute (or set of attributes) that has been chosen for an entity, whose values are used to uniquely identify a particular instance of an entity.
(A) True
(B) False
(C) Partially True
(D) None of the above
A collection of concepts that can be used to describe the structure of a database?
(A) Database
(B) DBMS
(C) Data Model
(D) Data