Higher Study | DBMS

Practice Higher Study | DBMS on Bissoy — browse topics below and open any question.

Query Language Transaction Concurrency Control File Organization and Indexing Integrity Constraints and Normal Form Introduction and ER Model

Questions

Which of the following statements is false?

ক

Buriganga is a river.

খ

Our rivers are not in a good shape.

গ

Jahangirnagar was once called Dhaka.

ঘ

Water is being contaminated.

Which one of these is characteristic of RAID 5?

ক

Distributed parity

খ

No Parity

গ

All parity in a single disk

ঘ

Double Parity

What is the full form of SQL?

ক

Structured Query Language

খ

Structured Query List

গ

Simple Query Language

ঘ

None of the Mentioned

What do data warehouses support?

ক

OLAP

খ

OLTP

গ

OLAP and OLTP

ঘ

Operational databases

Given the basic ER and relational models, which of the following is INCORRECT?

ক

An attribute of an entity can have more than one value

খ

An attribute of an entity can be composite

গ

In a row of a relational table, an attribute can have more than one value

ঘ

In a row of a relational table, an attribute can have exactly one value or a NULL value

Which of the following is not a logical data-base structure?

ক

tree

খ

relational

গ

network

ঘ

chain

ঙ

All of the above