Explain the SQL function categories in database

Write syntax for DELETE and TURNCATE in SQL databases.

Explain the purpose of a data dictionary in the context of database management.

Explain the concept of database indexing and its impact on performance.

DataBase The following tables form part of a database held in a relational DBMS:- Hotel (hotelNo, hotelName, city) Room (roomNo, hotelNo, type, price) Booking (hotelNo, guestNo, dateFrom, dateTo, roomNo) Guest (guestNo, guestName, guestAddress) where Hotel contains hotel details and hotelNo is the primary key; Room contains room details for each hotel and (roomNo, hotelNo) forms the primary key; Booking contains details of the bookings and (hotelNo, guestNo, dateFrom) forms the primary key; and Guest contains guest details and guestNo is the primary key. Generate the relational algebra, expressions for the following queries: (a )List all hotel names. (b) List all single rooms with a price below 20ドル per night. (c) List the names and cities of all guests. (d) List the price and type of all rooms at the Grosvenor...

What is the primary purpose of an index in a database?

Explain the concept of ACID properties in the context of database transactions.

In database testing, what do we need to check normally?

Explain about Tuple relational calculus (TRC) and Domain relational calculus (DRC)

Describe the role of "isolation levels" in managing database concurrency.

SQL Database Explain the function and importance of the SQL COMMIT command and list the pros/cons of using Autocommit mode.

Can you demonstrate a SQL database's operation?