Q 5. Table X is given below with attributes (A, B, C, D, E). Find out set of super keys, candidate keys and primary keys. A B C D 10 Ci DI El 2 11 C2 D2 El 3 10 ci DI El 2 10 ci D2 El 3 12 ci D2 El

Q: How well do you think you know the difference between a candidate key and a composite main key?

A: Introduction Key A key is an attribute, or group of characteristics, that enables us to recognise a…

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A: A relation is said to be in the third normal form if only if the relation is in both first normal…

Q: What is the definition of the Candidate key?

A: Candidate key: A row in a relational database is identified by one or more columns (fields) that are…

Q: How well do you think you know the difference between a candidate key and a composite main key?

A: Foundation: Candidate keys are selected to uniquely identify tuples in a database, and the primary…

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Q: Is it possible for you to identify a composite main key from a candidate key?

A: What is candidate key ? The candidate key is the set of one or more attributes that uniquely…

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Q: Changing the. EmployeeID = 1 to 10 in the table Employee. If it is rejected, explain   EMPLOYEE(…

A: We need to changing the EmployeeID = 1 to 10 in the table Employee and  if it is rejected, explain.

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A: We have to normalize the given data and create a relational database to store the information about…

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Q: Can you give example about composite key and alternate key ?

A: Introduction   Can you give example about composite key and alternate key ?

Q: Assume a candidate key is a main key attribute. Your response?

A: In the context of database management, a candidate key is a set of one or more attributes that can…

Q: Write an SQL query to fetch the different projects available from the EmployeeSalary table.

A: We need to write SQL query for the given scenario.

Normalization

Normalization is the process of eliminating redundancy in a database by organizing the data into several smaller tables. The large tables are normalized (converted) into smaller tables by using normalization rules, so that a database administrator can easily handle them. It also eliminates insertion, deletion, and update anomalies.