I believe the answer is annual maintenance
Hope this helps :p
Answer:
In the given question the correct option is missing, which can be described as follows:
"It transforms binary, null variables into the groups."
Explanation:
These variables are real variables, which could also take up a series of variables, that are either constrained or defined. This can be regarded as a listing. It is used to analyze and convert it, into binary in the following ways, and wrong choices can be described as follows:
- In option a, It can't combine, it only converts.
- Option b and Option c is wrong because, it can't convert numeric, it only convert binary number to dummy variables.
Answer:
Correct answer is option B (The reason for using supertypes is to minimize the number of nulls and to minimize the likelihood of redundant relationships)
Explanation:
Entity supertype
A entity supertype is a generic entity type which is related with one or more subtypes.
Use of entity supertype:
The reason for using entity supertype is to reduce redundant relationships and it is also used to minimize the number of nulls.
