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What is a subtype discriminator? give an example of its use

Assignment Help Basic Computer Science
Reference no: EM13887068

PART I

Directions: Write a 250 to 300 word response to each of the following prompts.

1. Define data definition commands, data manipulation commands, and data control commands and their individual influence on SQL.

2. Discuss a referential integrity constraint.

3. Explain the benefits an organization receives by obtaining a SQL standard.


PART II

Please utilize LIRN conduct research on the topics outlined in the questions below. You may visit the Academic Resource Center for a guide on how to utilize LIRN successfully. Your response to each question should be one page in length and include 1-2 references in APA format.

1. What is an entity supertype, and why is it used?

2. What kinds of data would you store in an entity subtype?

3. What is a subtype discriminator? Give an example of its use.

4. What is an overlapping subtype? Give an example.

Reference no: EM13887068

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