Answer:Schema
Explanation: A schema is the group that contains objects of databases with views, index, triggers, tables etc features. The specific user can access schema who persist a certain username.The user is considered as the owner of the database and its element.
Schema is usually bound to have only single database.There are some schema that are already present in the system as the in-built schema .E.g.- sys, guest etc.
Answer and Explanation:
Multiple-line comments :
Advantage :In the event that we need to remark out of zone of the given program , we can utilize it.
Disadvantage : In numerous line results are in reduced unwavering quality. It stretches out the remark as far as possible of the following comment.For least difficult approach to unintentionally leave off the last delimiter, which successfully expelling code from the program.
Single Line Comments :
Advantage :In the event that you need to close all the delimiter before close the program we utilize this kind of remarks.
Disadvantage : It put more burden on your program .It repeated on every line of a block of comments
