A schema describes Options: A . &nbspRecord relationship B . &nbspData elements C . &nbspRecord and files D . &nbspAll of the above

A schema describes

Question

A schema describes

Options:

A . Record relationship

B . Data elements

C . Record and files

D . All of the above

Answer: Option D

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Question 1. Which of the following is not a type of data?....

Question 2. A logical schema....

Question 3. What is data integrity....

Question 4. A table is a collection of relationships, there is a close correspondence between concept of....

Question 5. In relational model, the row of table is known to be ?....

Question 6. Which of the following provides the ability to query information from the database and insert tuples into, delete tuple....into, delete tuples from, and modify tuples in the database?

Question 7. A _________ integrity constraint requires that the values appearing in specified attributes of any tuple in the referen....attributes of at least one tuple in the referenced relation

Question 8. In Hierarchical model records are organised as ....

Question 9. ....

Question 10. The union of primary keys of the related entity sets becomes a -------------------------- of the relation ?....

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