1.

Give the advantages of disadvantages of index sequential access method.

Answer»

The advantages of disadvantages of index sequential access method are:

Advantages:

  • It combines both sequential and direct
  • Suitable for sequential access and random access.
  • Provides quick access to records.

Disadvantages:

  • It uses special software and is expensive.
  • Extra time is taken to maintain index.
  • Extra storage for index files.
  • Expensive hardware is required.


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