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Questions and Answers
What is the characteristic of a dense index?
What is the characteristic of a dense index?
What is the advantage of sparse index files?
What is the advantage of sparse index files?
What is the disadvantage of indexed-sequential files?
What is the disadvantage of indexed-sequential files?
What is a characteristic of B+-tree indices?
What is a characteristic of B+-tree indices?
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What is the procedure to locate a record with search-key value K in a sparse index?
What is the procedure to locate a record with search-key value K in a sparse index?
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What is the advantage of a sparse index on top of a dense index (multilevel index)?
What is the advantage of a sparse index on top of a dense index (multilevel index)?
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What is the assumption made in the simplest file organization approach?
What is the assumption made in the simplest file organization approach?
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What is a consequence of not moving records on deletion?
What is a consequence of not moving records on deletion?
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What is the purpose of a free list?
What is the purpose of a free list?
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What is a characteristic of variable-length records?
What is a characteristic of variable-length records?
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What is an alternative to moving records on deletion?
What is an alternative to moving records on deletion?
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What is a consequence of allowing records to cross block boundaries?
What is a consequence of allowing records to cross block boundaries?
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What type of record type allows variable lengths for one or more fields?
What type of record type allows variable lengths for one or more fields?
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How are null values represented in a record?
How are null values represented in a record?
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What is the method of storing records in a file based on the value of the search key of each record?
What is the method of storing records in a file based on the value of the search key of each record?
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What is the organization of records method that uses a hash function to determine the block of the file where the record should be placed?
What is the organization of records method that uses a hash function to determine the block of the file where the record should be placed?
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How can records of each relation be stored in a file?
How can records of each relation be stored in a file?
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What is the main purpose of a multitable clustering file organization?
What is the main purpose of a multitable clustering file organization?
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What is the primary concern in a sequential file organization when inserting a new record?
What is the primary concern in a sequential file organization when inserting a new record?
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What is the function of a hash index?
What is the function of a hash index?
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What is the primary advantage of indexing mechanisms?
What is the primary advantage of indexing mechanisms?
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What is the purpose of an index file?
What is the purpose of an index file?
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What is an example of an access type supported efficiently by indexing mechanisms?
What is an example of an access type supported efficiently by indexing mechanisms?
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What is the primary purpose of ordered indices?
What is the primary purpose of ordered indices?
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What is a characteristic of a clustered index?
What is a characteristic of a clustered index?
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What happens when searching for a record in a database with no index?
What happens when searching for a record in a database with no index?
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What is the benefit of using a clustered index in a department-based employee database?
What is the benefit of using a clustered index in a department-based employee database?
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What is the purpose of grouping records in a clustered index?
What is the purpose of grouping records in a clustered index?
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What happens to the records which have similar characteristics in a clustered index?
What happens to the records which have similar characteristics in a clustered index?
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