How many queries remain before you can determine whether database as a service is the optimal solution for your library's needs?

A database has student records, with four different options for grade level: 9th, 10th, 11th, or 12th. What are two different ways that you could write a query that would locate all students who are not in 11th grade? Which method would you prefer? Why?

Reducing the size of a table in a relational database may be done using a select operation by removing columns that aren't needed.Is that so, or not?

Explain how columnar databases optimize query performance.

While working with a relational database, a select operation may be used to prune unnecessary columns from a table, making it more manageable.Could it be real or false?

Keyword queries used in web search are quite different from database queries. List key differences between the two, in terms of the way the queries are specified  and in terms of what is the result of a query.

How many more questions do you need answered before deciding whether database as a service is right for your library?

In a relational database, a select operation is used to minimise the size of a table by eliminating columns that fulfil certain criteria.Is this the right answer or the wrong answer?

Access path A database table is composed of records and fields hold data. Data is stored in records. A field is a part of a record and contains a single piece of data for the subject of the record. The access path for finding the list of books is AUTHOR: AuthorID, Lname BOOKAUTHOR: AuthorID, ISBN BOOKS: Pubdate, ISBN

An in-memory database (IMDB) is a database management system that stores the entire database in _______. a. random access memory b. read-only memory c. distributed servers d. virtual memory