An SQL statement is a complete set of clauses which returns a value and ends with a semicolon(;)
A statement is made up of several clauses
Ex: select * from person where f_name='me';
In this ex ' select * from person where f_name='me';' is the statement and select*, from person, where f_name= are the clauses
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T-SQL is Microsoft's version of the generic SQL langauge to be used with, for example, Microsoft SQL Server.
gand maro...is the answer
Update and Alter are two SQL (Structured Query Language) commands used for modifying databases. Update statement is used to update existing records in a database. Update is a Data Manipulation Language (DML) statement. Alter SQL command is used to modify, delete or add a column to an existing table in a database. Alter is a Data Definition Language (DDL) statement.Commands that are used to define the structure of a database (database schema) are called DDL statements.
in some cease both are the same they use query language but in fact the out puts are very deference
A catalog is simple a group of related schema collected together in a defined namespace. While schema is a group of one or more related object collected in a common namespace.