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.
Answer:
A Telephone, Printer, Computers, Security Monitor
Nope. You're on your own to find them and fix them. This why testing is so important, otherwise they won't show up until the customer finds them and that's embarrasing.
Answer:
Colon(:) is the correct answer.
Explanation:
The colon(:) is used to contain those fields which is calculated in the queries. In other words, the colon is used to insert the name for that field which is calculated then, the user uses the colon(:) and after that, he uses the expression in the columns or the field row. So, That's why the following option is true.
