Question

Explain the following terms in the context of a relational model with the help of one example of each– Cartesian Product, Candidate Key, Primary Key constraint, Set difference operation and Referential Integrity.

01 Dec 2023
Answer :
Word Count : 556

Explaining each of these terms in the context of a relational model with examples:

  1. Cartesian Product: In the relational model, the Cartesian product, often denoted by the symbol "×", combines every row of one table with every row of another table. It results in a new table where each row is a combination of a row from the first table and a row from the second table. The resulting table contains all possible combinations of rows from both tables.

    Example: Consider two tables: Students and Courses. The Students table contains information about students such as student ID and name, while the Courses table contains information about courses such as __________ ___ __________ __________ ________ ___.
    ______ _______ ______ ______ _______ _____ _________ ________ __________ ____.
    _________ _______ _______ __________ _________ ___ _____ _____.
    _____ _________ ____ __________ ________ _____ ____ ____ __________ _______.
    _______ _____ ________ ________ ________ ___.
    _____ ___ ______ _______ _________ _________ ____ ________ _________ _________ __________.
    __________ _______ _______ ____ ______ __________ ____ ___ ____ __________ _______.
    _____ _____ _______ _____ ______ ____ _______ _______ __________.
    ________ _____ __________ ______ _____ ___ _______ __________ __________ ______.
    ________ __________ _____ _______ ________ _______ _______ ______ _________.
    ___ _____ _________ _________ _____ ________ ________ ____ _________ _____.
    __________ _____ _____ ___ _____.
    ______ ___ ____ __________ ___ ____ _____.
    ____ ____ ________ ____ __________ ____ ___ ________ ______ ________ ______.
    __________ ___ _________ ___ ________ ________ _______ _____ _________ _____ ___ ____.
    ______ _______ __________ ____ ____ ______ ____ ____ ____ __________ ___ __________.
    ___ ____ __________ ______ __________ ______ ______ ______ ______ ________ _____ ______.
    _____ ____ _________ ________ ____ _____ _______ ______ _________ ______ _________ ________.
    ___ __________ ____ __________ ______.
    _________ __________ _______ __________ _______ ____ ______ ________ _________ ________.
    ___ _________ __________ ___ ______ ___ ________ _______.
    ______ ________ _____ _____ _______ __________ ______ _________ _______ _______.
    _______ __________ ____ ___ ________.
    _______ ___ _______ _________ _________ _______ ______ ______.
    _____ _______ ______ ________ _______ _______ _______ ___ _______ ___ ________.
    ________ _____ ___ ___ _____ __________ ______ ______ ___ ________.
    ________ ______ ________ ___ ________.
    ______ ____ ______ _________ _____ _____ _________ ____ ______ __________ ___.
    _________ _________ ___ __________ _______ ____ ______ _________ ____ ______ __________ _________.
    ______ ___ _________ _______ ____ _________ _____ _______ ____ __________ ______.
    ________ _______ ____ __________ ________ ________ ________ _______ _________.
    _________ __________ _________ _______ ______.
    __________ ______ _______ ______ _____ ____ _____ _________ ______ __________ _____.
    ________ ___ ____ ________ ___ ____ _____ _____ _______ ______ ____.
    ____ ________ _________ ______ _____.
    ______ _________ _____ _____ _________ ________ ______ _______ _______.
    _______ _____ ________ ________ ______ _______ ___ ______.
    ______ _____ _____ __________ ___.
    ____ ____ _________ _______ _____ ____.
    _____ ___ ______ _______ ________ ____ ________.
    __________ ________ ________ ____ __________ _______ ______ ___ ___.
    ______ __________ ____ ___ __________.
    _____ ______ ______ _________ _____ _________ _________ ________ ________ _________.
    _______ ____ __________ ________ ________ _______ _______ __________ ______ _________ ______.
    _________ _____ ___ ___ ___ ________ _________ ___ ________.
    ___ ____ ________ ___ __________ __________ ____ ________ _____ __________ ___.
    _______ ___ __________ _______ ________ ____ ______ ___ ________.
    ____ ___ __________ ___ ____ ___ _________ ________ ___.
    __________ _______ ___ ____ ________ ______ _______ ____ ______.
    ________ _____ ____ _____ ___ ____ ____.
    _____ __________ ________.
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Explain the following terms in the context of a relational model with the help of one example of each– Cartesian Product, Candidate Key, Primary Key constraint, Set difference operation and Referential Integrity.

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