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MCA Computer Science — practice by topic

Browse 151 questions across 9 Computer Science topics. Choose what you want to revise, then open a question to check its answer and worked solution.

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Computer Science topics

Sorting and Searching (32)Database Concepts (30)Stacks and Queues (30)Structured Query Language (30)Computer Science (29)Olympiad Computer Science (29)Programming (29)Programming Languages (29)Software Development (29)

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Software used to create and manage databases is called a:Read the answer and worked solution →Rows of a table in a relational database are called:Read the answer and worked solution →Columns of a table in a relational database are called:Read the answer and worked solution →Duplicating the same data in different places is called:Read the answer and worked solution →

Worked practice questions

Software used to create and manage databases is called a:

  1. Database management system
  2. Database mapping schedule
  3. Database matching sequence
  4. Database masking standard
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Correct answer: A. Database management system

1. A database is not managed by hand. 2. A dedicated piece of software does the creating and managing. 3. A database management system is software used to create and manage databases. 4. It is called a database system for short. _Source: syllabus Computer Science, Ch 8 'Database Concepts'_

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Rows of a table in a relational database are called:

  1. Trumpets
  2. Tuples
  3. Turrets
  4. Tunnels
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Correct answer: B. Tuples

1. A relational table has rows and columns. 2. Each has its own formal name in the relational model. 3. Rows and columns of a table are called tuples and attributes respectively. 4. So a row is a tuple. _Source: syllabus Computer Science, Ch 8 'Database Concepts'_

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Columns of a table in a relational database are called:

  1. Attributes
  2. Aptitudes
  3. Altitudes
  4. Amplitudes
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Correct answer: A. Attributes

1. The rows of a relation are called tuples. 2. The columns carry a different name. 3. Rows and columns of a table are called tuples and attributes respectively. 4. So a column is an attribute. _Source: syllabus Computer Science, Ch 8 'Database Concepts'_

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