Computer Knowledge

Database Management Systems

5,543 Questions

Database Management Systems (DBMS) form the core framework for data storage, retrieval, and security in modern software applications. Concepts such as the E-R model, backup planning, SQL integration, and big data architecture are essential for computer knowledge sections. This hub offers a comprehensive set of practice questions to master DBMS fundamentals and advanced database operations.

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Database Management Systems Questions

Multiple choice accountancy application of electronic spreadsheet in accounting introduction and importance of ms excel micosoft office rational data model (rdm)

A __________ is a set of relation schemas and a set of integrity constraints.

  1. Relational database

  2. Relational database schema

  3. Relational schema

  4. Database schema
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A relational database schema is a set of relation schemas and a set of integrity constraints. A relational database state is a set of relation state such that every relational database state satisfies the integrity constraints specified on relational database schema.

Multiple choice accountancy application of electronic spreadsheet in accounting introduction and importance of ms excel micosoft office rational data model (rdm)

The ______ for binary relationship specifies the number of relationship instance that an entity can participate in. 

  1. Timeware based

  2. Computer based

  3. Liveware based

  4. Selection based
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cardinality ratios (computer based) for binary relationship specifies the number of relationship instance that an entity can participate in.

Multiple choice accountancy application of electronic spreadsheet in accounting introduction and importance of ms excel micosoft office rational data model (rdm)

Which of the following statements are correct for Relational Data Model (RDM):
a. Relational Data Model (RDM) is the most popular and widely used in actual practice.
b. Relational data model represents the database as collection of relations, which resembles  a table of values. 

  1. Only "a" is correct.

  2. Only "b" is correct.

  3. Both "a" and "b" are correct.

  4. None of the above is correct.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The relational data model represents the database as collection of relations, which resembles a table of values (or data table). Each row of the table, therefore, represents a collection of related data values and hence typically corresponds to real world entity or relationship. Among several representational models, Relational Data Model (RDM) is the most popular and widely used in actual practice. 

Multiple choice accountancy application of electronic spreadsheet in accounting introduction and importance of ms excel micosoft office rational data model (rdm)

The value of each attribute of a relation must be an indivisible value and drawn out of possible values associated with its ________. 

  1. Entity

  2. Key

  3. Domain

  4. Referential
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The domain is one of the constraints, which can be specified on relational databases. The value of each attribute of a relational must be an indivisible value and drawn out of possible values associated with its domain. The value of an attributed, therefore, must conform to the data type associated with the domain.

Multiple choice accountancy application of electronic spreadsheet in accounting introduction and importance of ms excel micosoft office rational data model (rdm)

A ________ state is a set of relation states such that every relational database state satisfies the integrity constraints specified on relational database schema.

  1. Accounting database

  2. Relational database

  3. data management

  4. Database technology
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A relational database schema is a set of relation schemas and a set of integrity constraints. A relational database is a set of relation states such that every relational database state satisfies the integrity constraints specified on relational database schema.

Multiple choice accountancy application of electronic spreadsheet in accounting introduction and importance of ms excel micosoft office rational data model (rdm)

The ___________ model represents the database as collection of relations, which resembles a table of values (or data table).

  1. relational data

  2. entity integrity

  3. referential integrity

  4. entity relationship
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The relational model organizes data into tables (relations) consisting of rows and columns. This structure is the foundation of relational database management systems.

Multiple choice accountancy application of electronic spreadsheet in accounting introduction and importance of ms excel micosoft office rational data model (rdm)

The two categories of operations on relational model are ______ and ______.

  1. Insert, Delete

  2. Updates, Retrieval

  3. Updates, Delete

  4. Retrieval, Insert
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A relational database schema is a set relation schemas and integrity constraints. It is a set of relation states such that relational database state satisfies the integrity constraints specified on relational database schema. There are two categories of operations on relational model: updates and retrieval. Update operation are of three basic types i.e. insert, delete and modify. Retrieval operation on relational data model does not cause violation of any integrity constraints.

Multiple choice accountancy accounting software - tally concept of entity and relationship designing and creating simple tables, forms, and queries objective in dbms

__________ is the object class used to create various reports., the source of information content of which is based on tables, queries or both.

  1. Forms

  2. Tables

  3. Pages

  4. Reports
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In database management systems like MS Access, reports are the specific object class designed to present data from tables or queries in a formatted, printable layout.

Multiple choice accountancy accounting software - tally concept of entity and relationship designing and creating simple tables, forms, and queries objective in dbms

The object class which allows a database designer to create the data tables with their respective field names, data types is called ________.

  1. queries

  2. tables

  3. forms

  4. reports
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Tables are the fundamental building blocks of a relational database, used to store data in rows and columns with defined field names and data types.

Multiple choice accountancy accounting software - tally concept of entity and relationship designing and creating simple tables, forms, and queries objective in dbms

____________ refers to some aspect of real world situation, for which database is to be designed.

  1. ER Design

  2. Reality

  3. Relational Data Model

  4. Normalisation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Reality refers to some aspect of real world situation, for which database is to be designed. In the context of accounting, it is an accounting reality that is to be expressed with complete description.

Multiple choice accountancy accounting software - tally concept of entity and relationship designing and creating simple tables, forms, and queries objective in dbms

A process of refining a database design through which the possibility of duplicate or redundant data items are reduced or eliminated is _______.

  1. ER design

  2. Refinement

  3. Reality

  4. Normalisation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Normalisation is a process of refining a database design through which the possibility of duplicate or redundant data items are reduced or eliminated.

Multiple choice accountancy accounting software - tally concept of entity and relationship designing and creating simple tables, forms, and queries objective in dbms

Which one of the following is a DataBase Management System?

  1. MS Access

  2. MS Excel

  3. MS Outlook

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Microsoft Access is a database management system (DBMS) from Microsoft that combines the relational Microsoft Jet Database Engine with a graphical user interface and software-development tools. 

Multiple choice accountancy accounting software - tally concept of entity and relationship designing and creating simple tables, forms, and queries objective in dbms

Which of the following has RDBMS?
i. Access
ii. Excel

  1. (i) and (ii)

  2. Only (i)

  3. Only (ii)

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Microsoft  Excel and Access are Microsoft's two different application software. They both handle tabular data, but there are still many differences between them. Excel is a spreadsheet application program, but Access is a database program.