Question

Define 'Referential Integrity'. *
A] Arrange the data in either ascending order of descending order.
B] Reference from a row in one table to another table must be valid.
C] Any association between two entity types
D] Collect specific information from the pool of data

Answer 1

C Part is Ur Answer .. ☺❤

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Answer 2

Answer:

Explanation:

1 ans= Referential integrity is a property of data stating that all its references are valid. In the context of relational databases, it requires that if a value of one attribute of a relation references a value of another attribute, then the referenced value must exist.\

(A) ans=Sorting is the process of arranging data in in ascending or descending order on the basis of one or more columns. 2. You can access sorting feature by clicking on data tab > sort and filter group > sort.

(B) ans=You cannot use TRUNCATE TABLE on tables that: Are referenced by a FOREIGN KEY constraint. (You can truncate a table that has a foreign key that references itself.

(C)ans= i don't know

(D) ans=_QUERY_ is helps to collect specific information from the pool of data in the database. 22. _SELECT__ statement retrieves zero or more rows from one or more database tables or database views. 23