Database Concepts — Important Questions
Jammu & Kashmir Board · Class 12 · Computer Science
43 important questions from Database Concepts for Jammu & Kashmir Board Class 12 Computer Science, with answers. Written for the board exams 2027.
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Important Questions from Database Concepts
Which of the following are limitations of file systems?
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Data redundancy, Data inconsistency, Data isolation
File systems suffer from data redundancy (same data duplicated), data inconsistency (same data doesn't match in different places), and data isolation (no proper linking between files). Easy data access and automatic backup are not characteristics of file systems.
A database schema is the design of a database.
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True
Database schema is indeed the design or structure of a database, showing table names, fields, data types, constraints, and relationships among tables.
Which of the following are examples of DBMS software?
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MySQL, Oracle, PostgreSQL
MySQL, Oracle, and PostgreSQL are database management systems. Microsoft Word is a word processor and Photoshop is image editing software, not DBMS.
What is a tuple in a relational database?
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A row of data in a table
A tuple is each row of data in a relation (table). It represents a relationship between related values in different columns.
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