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Which of the following statements is true? Note that more than one of the statements may...

Which of the following statements is true? Note that more than one of the statements may be true.

a. Normalization of the relational schema in a database always has the effect of increasing the number of relational schema.

b. Normalization of the relational schema in a database can have the effect of reducing the number of relational schema.

c. Normalization of the relational schema in a database may have the effect of increasing the number of relational schema.

d. Normalization of the relational schema in a database always has the effect of reducing the number of relational schema.

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Answer #1

There are many benefits of normalizing a database. Here are some of the key benefits:

  • Minimizes data redundancy (duplicate data).
  • Minimizes null values.
  • Results in a more compact database (due to less data redundancy/null values).
  • Minimizes/avoids data modification issues.
  • Simplifies queries.
  • The database structure is cleaner and easier to understand. You can learn a lot about a relational database just by looking at its schema.
  • You can extend the database without necessarily impacting the existing data.
  • Searching, sorting, and creating indexes can be faster, since tables are narrower, and more rows fit on a data page.

So normalization of relation schema in database may increase/decrease the no. Of relationship schema depend upon the normal form and initial schema of database. So i think option (b) and (c) are true.

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