We can lock a table to ensure that we don't accidentally overwrite someone else's edits. 1) A single attribute, but not a row, table, or database as a whole. O 2) A single row, but not a complete table 3) A single row or a single table, but not a full database 4) A single row, a table, or a database in its whole

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SQL Query

Structured Query Language is the full form of SQL. It is one of the standard languages to deal with the relational database. It is used to insert, update, delete, and search the records stored in a RDBMS. The relational databases are created and managed by using SQL.