DATABASE MANAGEMENT SYSTEMS
Master Your Database Knowledge
Test your understanding of Database Management Systems with this comprehensive 20-question quiz. Whether you're a student, a professional, or just a curious learner, this quiz will challenge your knowledge and help you learn more about the fascinating world of databases.
Topics covered include:
- Data Abstraction
- Entity-Relationship Diagrams
- Normalization Forms
- Keys in Relational Databases
A Database Management System (DBMS) is_________
Operating System
Package or software
Tool
Component
A Database is a collection of_______________ data.
Related data
Information
Documents
Files
______, ______ and ___________ is the level of data abstraction?
Physical, logical, View
Physical, logical, Virtual
Physical, Figure, Logical
Physical, Mathematical, Strucutre
In an Entity-Relationship Diagram Rectangles represents___________
Attributes
Entity set
Relationship
Participation
Schema refers ____________of DBMS
Over all structure
Entity
Records
Tuples
A relational database consists of a collection of_____________
Information
Documents
Tables
Attributes
In mathematical term Table is referred as____________
Table
Relation
Entity
Database
In mathematical term Row is referred as_____________
Entity
Table
Records
Tuple
___________allow us to identify uniquely a tuple in the relation.
Primary Key
Foreign Key
Candidate Key
Reference Key
Logical design of database is called _______________
Structure
Diagram
Database Schema
Model
Snapshot of the data in the database at a given instant of time is called_____
Instance
View
Projection
Snapshot
The Primary key must be____________ and_____________
Not Null and Unique
Default and Unique
Not Null and Default
Null and Unique
In an Entity-Relationship diagram “Double Rectangles” represents
Entity
Weak Entity
Relationship
Derived Attribute
A ___ is normalized after it has been organized.
Table
Database
Colunm
Attribute
Normalizing relations or sets of relations, which minimizes ___.
Tables
Records
Redundancy
Attributs
When a relation contains an atomic value, it is a ___ relation.
1NF
2NF
3NF
BCNF
When a relation is in 2NF and there is ___, it is in 3NF.
Transition Dependency
No Transition Dependency
Relational Dependency
No Relational Dependency
Non-prime attributes cannot be transitively dependent, so the relation must have the ___ normal form.
FIRST
SECOND
THIRD
BCNF
A _________ consists of a sequence of query and/or update statements.
Transactions
Update
Commit
Rollback
In order to undo the work of transaction after last commit which one should be used?
Flashback
Revert
Redo
Rollback
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