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Svet_ta [14]
3 years ago
11

Why would "ExpirationDate” be a poor choice as a primary key?

Computers and Technology
1 answer:
denis23 [38]3 years ago
4 0
<span>There could be more than one item with the same expiration date, and primary keys must be unique.</span>
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Which statement describes a feature of Oracle sequences? Oracle sequences generate a character string that can be assigned to ta
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Answer:

An Oracle sequence uses the identity column property to automatically number rows.

Explanation:

An Oracle sequence is a tool that can be used to generate a number sequence. Oracle has the capacity to help you create an auto-number field by using one of its tools called sequence.

A sequence is an object in Oracle that is used to generate a number sequence for input to a table. This is required when you need to generate primary key values by the use of identity columns.

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