DATABSE SYSTEM CONCEPTS QUIZ
Database System Concepts Quiz
Test your knowledge of Database System Concepts with our comprehensive quiz! This quiz covers a variety of essential topics that every database enthusiast should know.
- Examine your understanding of DBMS advantages and disadvantages
- Explore key concepts like primary keys, data models, and E-R diagrams
- Challenge yourself with multiple choice questions designed for all skill levels
Advantages of DBMS
A) Reduction in Data redundancy
B) Data consistency and integrity
C) Data security
D) Privacy
E) All of the above
Disadvantages of typical file processing systems.
A) Data redundancy and inconsistency
B) Difficulty in accessing data
C) Data isolation
D) Integrity problems
E) All of the above
A table is a collection of related data held in table format. It is a set of data elements using a model of vertical columns and horizontal rows
True
False
Each table contains a field which is a data structure, used to hold the data. It can also be termed as an attribute.
True
False
Primary key is an attribute or set of attributes used to identify an entity from an entity set. All the values of a primary key should be unique and null values are not allowed
True
False
Network Model Represents tree like structure with one root
True
False
Hierarchical model Reflects M:N(many to many) relations
True
False
An Index is a schema object. It is used by the oracle server to improve the speed of retrieval of the rows from a table
True
False
The data stored in a database at a particular moment of time is called an instance of the database.
True
False
Design of a database is called a schema. Schema is of three types: Physical schema, logical schema and view schema.
True
False
Database Management System(DBMS) is
Collection Of Interrelated Data
Collections of Program to access data
Collection of data describing one particular enterprise
All of the Above
In an Entity-Relationship(E-R) Dagram Rectangles Represent____
Attributes
Relation
Entity Sets
Database
Which of the following is not the Storage Manager Component?
Transaction Manager
Logical Manager
Buffer Manager
File Manager
Which Of the following is not the Schema?
Logical Schema
Physical Schema
External Schema
Critical Schema
Which of the Following is the Database Language?
Data Definition Language(DDL)
Data Query Language(DQL)
Data Manipulation Language(DML)
All Of the Above
Which of the following is the data model?
E-R model
Relational Data Model
Object-based Data Model
None of the Above
Column Header is refer as
Relation
Attributes
Table
Domain
In Mathematical Term Table is Referred as?
Relation
Domain
Tuple
Attribute
In Mathematical Term Row is referred as?
Tuple
Domain
Relation
Attribute
Logical Design Of Database Is Called__?
Database Instance
Database Schema
Database Snapshot
All Of the Above
Snapshot of Data in the database at the given instance of time is called
Database Instance
Database Schema
Database Snapshot
All Of the Above
Primary key Must be ?
Unique
Not Null
Both A & B
None
The Attribute that can be divided into Other Attribute is called?
Key Attribute
Multivalued Attribute
Composite Attribute
Simple Attribute
In An E-R Diagram Ellipse Represent?
Weak Entity Set
Relationship set
Attributes
Derived Attribute
In an E-R Diagram Diamonds Represent?
Multivalued Attributes
Weak Entity Set
Relationship Set
Strong Entity Set
What is the full form of DBMS?
Data of Binary Management System
Database Management System
Database Management Service
Data Backup Management System
What is DBMS?
DBMS is a collection of queries
DBMS stores, modifies and retrieves data
B) DBMS is a high-level language
DBMS is a programming language
Who created the first DBMS?
Edgar Frank Codd (EF Codd)
Sharon B. Codd
Charles Bachman
Charles Babbage
Which type of data can be stored in the database?
Image oriented data
Text, files containing data
Data in the form of audio or video
All of the above
What is information about data called?
Hyper Data
Tera Data
Meta Data
Relations
In which of the following formats data is stored in the database management system?
Image
Text
Table
Graph
Which of the following is not a function of the database?
Managing stored data
Manipulating data
Security for stored data
Analysing code
Which of the following is a function of the DBMS?
Storing data
Providing multi-users access control
Data Integrity
All of the above
Which of the following is a component of the DBMS?
Data
Data Languages
Data Manager
All of the above
What does an RDBMS consist of?
Collection of Records
Collection of Keys
Collection of Tables
Collection of Fields
The DBMS acts as an interface between ________________ and ________________ of an enterprise-class system.
Data and the DBMS
Application and SQL
Database application and the database
The user and the software
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