A database is a place to permanently store data for retrieval in a safe, efficient way. A database allows us to create data and save it permanently. It allows us to retrieve previously created data, update existing data, or delete existing data.
A transaction groups SQL statements so that they are all applied to the database. If one statement fails for some reason, all the statements are undone from the database. Transactions ensure data integrity . Transactions distinguish a database management system such ...
