Database Concepts
Manipur Board · Class 12 · Computer Science
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What is a file system?
What does DBMS stand for?
What is meta-data in the context of databases?
In a relational database, tables are called:
Sample Questions
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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