EASY
HSSC Clerk
IMPORTANT
Earn 100
The three language components of a database management system (DBMS) like DDL, DCL, DML.
Two different types of people (users and practitioners) are concerned with them. Which of them do users of a DBMS usually deal with?
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Important Questions on Practice Sets
EASY
HSSC Clerk
IMPORTANT
Find the correct match for terms in Column I to those in Column II.
| Column I | Column II |
| A. Rollback | P. Relationship |
| B. Atomicity | Q. Checkpoint |
| C. Entity | R. Attribute |
| D. Domain | S. Transaction |
Codes:
MEDIUM
HSSC Clerk
IMPORTANT
A data structure that allows database system to find tuples in relation that have a specified value for attribute, is known as:
MEDIUM
HSSC Clerk
IMPORTANT
Which of the following desired features are beyond the capability of relational algebra?
EASY
HSSC Clerk
IMPORTANT
Which of the following schemas can define a view or views of the database for particular users?
EASY
HSSC Clerk
IMPORTANT
In case the buffer manager does not write the blocks properly, then the buffer manager uses:
MEDIUM
HSSC Clerk
IMPORTANT
A phone is made up of many components like a motherboard, camera, sensors, etc. If the processor represents all the functioning of the phone, the display shows the display only, and the phone is represented as a whole. Which among the following have the highest level of abstraction?
HARD
HSSC Clerk
IMPORTANT
What are singleton objects?
MEDIUM
HSSC Clerk
IMPORTANT
The techniques which move the program blocks to or from the physical memory is called as _____.
