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Which rules are part of referential integrity? Check all that apply.
The tables must use a junction table
The primary table must have a primary key
The tables must belong to the same database.
The related fields should have the same data type.
The related fields should be combined as a composite key.
The destination table must be linked through its primary key

Sagot :

wolfmanj100

Answer:

B. The primary table must have a primary key.

C. The tables must belong to the same database.

D. The related fields should have the same data type.

Explanation:

arshikhan8123

The answers are given below.

  • B. The primary table must have a primary key.
  • C. The tables must belong to the same database.
  • D. The related fields should have the same data type.

Which rules are known as entity integrity and referential integrity?

Referential integrity is based on entity integrity. Entity integrity requires that each entity have a unique key. For example, if every row in a table represents relationships for a unique entity, the table should have one column or a set of columns that provides a unique identifier for the rows of the table.

What are the rules of referential integrity?

A referential integrity rule is a rule defined on a key (a column or set of columns) in one table that guarantees that the values in that key match the values in a key in a related table (the referenced value).

Learn more about referential integrity here https://brainly.com/question/17128955

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