Answer the following statements true (T) or false (F)
1. It is possible (and can be useful) to keep multiple index files on a single data file.
2. Use of an index file increases the number of required block accesses of the data file, especially for adds and removals.
3. When external hashing is used, you hash the index file instead of the data file
4. It is not possible to organize an index file as an external 2-3 tree.
5. In an external environment, the advantage of keeping a search tree short far outweighs the disadvantage of performing extra work, such as comparisons, at each node.
1. True
2. False
3. True
4. False
5. True
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