Question

Constraints that are applied on
individual tuples and are verified
whenever any tuple is modified or new
tuple is inserted are called
बाधाएं जो अलग-अलग ट्युपल्स पर लागू होती हैं
और जब भी कोई ट्युपल संशोधित होता है या नया
ट्युपले डाला जाता है, तब इसे सत्यापित किया जाता
cuc
Select one:
A. Language based constraints
भाषा आधारित कांसट्रेन्ट
B. Precision based constraints
प्रेसिजन आधारित कांसट्रेन्ट
C. Scale based constraints
स्केल आधारित कांसट्रेन्ट
D. Tuple based constraints
ट्युपल आधारित कांसट्रेन्ट​

Answer 1

scale based constraints

Answer 2

Answer:

D. Tuple Based Constraints

Explanation:

 An attribute that can uniquely identify a tuple in a relation is called the key of the table. The value of the attribute for different tuples in the relation has to be unique.

Attribute-based and tuple-based checks are types of integrity constraints.

Attribute-based ones perform checks on separate columns, tuple-based comprise records. For instanse, if you want to specify the attribute-based constraint on two columns, you would need a syntax like:

create table.....

column1 CHECK(column1 >= 1,000)

column2 CHECK(column2 >12000)

.....