“SELECT” command: The “SELECT” command is used to retrieve data in a database . Syntax for selecting values from the table is as follows: SELECT COLUMN_NAME1, COLUMN_NAME2 FROM TABLE_NAME; “AND” operator: The operator used to check two or more conditions using single query. The “AND” operator returns “true” when two conditions are satisfied in the query. “LIKE” operator: • In a “WHERE” clause, the “LIKE” operator is used to search for a particular pattern in a column. • The “%” represents 0, 1, or many characters and “_” represents a single character. • In MS Access, “*” is used instead of “%” and “?” is used instead of “_”.

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ut da Q4: Consider the LIBRARY relational database schema shown in Figure below a. Edit Author_name to new variable name where previous surname was 'Al - Wazny'. Update book_Authors set Author_name = 'alsaadi' where Author_name = 'Al - Wazny' b. Change data type of Phone to string instead of numbers. عرفنه شنو الحل BOOK Book id Title Publisher_name BOOK AUTHORS Book id Author_name PUBLISHER Name Address Phone e u al b are rage c. Add two Publishers Company existed in UK. insert into publisher(name, address, phone) value('ali','uk',78547889), ('karrar', 'uk', 78547889) d. Remove all books author when author name contains second character 'D' and ending by character 'i'. es inf rmar nce 1 tic عرفته شنو الحل e. Add one book as variables data? عرفته شنو الحل

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Question

Chapter 7, Problem 111C

Program Plan Intro

“SELECT” command:

The “SELECT” command is used to retrieve data in a database.

Syntax for selecting values from the table is as follows:

SELECT COLUMN_NAME1, COLUMN_NAME2 FROM TABLE_NAME;

“AND” operator:

The operator used to check two or more conditions using single query. The “AND” operator returns “true” when two conditions are satisfied in the query.

“LIKE” operator:

• In a “WHERE” clause, the “LIKE” operator is used to search for a particular pattern in a column.

• The “%” represents 0, 1, or many characters and “_” represents a single character.

• In MS Access, “*” is used instead of “%” and “?” is used instead of “_”.

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ut da Q4: Consider the LIBRARY relational database schema shown in Figure below a. Edit Author_name to new variable name where previous surname was 'Al - Wazny'. Update book_Authors set Author_name = 'alsaadi' where Author_name = 'Al - Wazny' b. Change data type of Phone to string instead of numbers. عرفنه شنو الحل BOOK Book id Title Publisher_name BOOK AUTHORS Book id Author_name PUBLISHER Name Address Phone e u al b are rage c. Add two Publishers Company existed in UK. insert into publisher(name, address, phone) value('ali','uk',78547889), ('karrar', 'uk', 78547889) d. Remove all books author when author name contains second character 'D' and ending by character 'i'. es inf rmar nce 1 tic عرفته شنو الحل e. Add one book as variables data? عرفته شنو الحل

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