Answer:
The correct answer is Option A (Referential integrity)
Explanation:
When a relational database table is in first normal form, that means it has no repeating fields or groups of fields, and hence all rows have the same columns, while if a relational database table is in second normal form, it implies that every non-key field is functionally dependent on the primary key. If can be in the third normal form if no non-key field is functionally dependent on any other non-key field.
A relational database on its own is a universal approved database model whose data is stored in tables divided into records and fields that serve as an information unit that organizes data points for easy access.
In the relational database, foreign keys are being checked to reference the primary key and enforce referential integrity so as to ensure that the foreign key must have a matching primary key. It means the reference from a row in one table to another table must be valid. Referential integrity concerns the concept of a foreign key normally enforced by the database management system.
I believe the correct answer from the choices listed above is option C. A credit limit is the maximum amount you can charge each billing cycle. <span>The </span>credit limit<span> on your credit card is the maximum balance your credit card issuer allows. Hope this answers the question.</span>
Answer:
The four critical factors to planning a successful project
Explanation:
Answer:
The answer for B is 10% and for C is 40%.
Explanation:
To get the percentage for B you take the the frequecy of students taking 2 courses (5) and multiply it by 100 then you divide it by whole number of students.
For C you do the after adding the number of students taking 1 or 2 courses (20).
