What SQL command will allow you to change the table STUDENT to add the constraint named GradeCheck that states that the values of the Grade column must be greater than 0?

Database Redesign
What SQL command will allow you to change the table STUDENT to add the constraint named GradeCheck that states that the values of the Grade column must be greater than 0?

ALTER TABLE STUDENT ALTER CONSTRAINT GradeCheck (Grade > 0);

ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck (Grade > 0);

ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck CHECK (Grade > 0);

None of these

ALTER TABLE STUDENT ALTER CONSTRAINT GradeCheck (Grade > 0);

ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck (Grade > 0);

ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck CHECK (Grade > 0);

None of these

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Database Redesign
What SQL command can be used to delete columns from a table?

MODIFY TABLE TableName DROP ColumnName

ALTER TABLE TableName DROP ColumnName

ALTER TABLE TableName DROP COLUMN ColumnName

MODIFY TABLE TableName DROP COLUMN ColumnName

MODIFY TABLE TableName DROP ColumnName

ALTER TABLE TableName DROP ColumnName

ALTER TABLE TableName DROP COLUMN ColumnName

MODIFY TABLE TableName DROP COLUMN ColumnName

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Database Redesign
The EXISTS keyword will be true if:

any row in the subquery meets the condition only.

neither of these two conditions is met.

both of these two conditions are met.

all rows in the subquery fail the condition only.

any row in the subquery meets the condition only.

neither of these two conditions is met.

both of these two conditions are met.

all rows in the subquery fail the condition only.

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Database Redesign
The SQL-92 command to change a table name is RENAME TABLE.

True

False

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Database Redesign
Some organizations take the stand that no application should ever employ the true name of a table.

False

True

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Database Redesign
How many copies of the database schema are typically used in the redesign process?

One

Four

Two

Three

One

Four

Two

Three

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Database Redesign

Database Redesign What SQL command will allow you to change the table STUDENT to add the constraint named GradeCheck that states that the values of the Grade column must be greater than 0?

Database Redesign What SQL command can be used to delete columns from a table?

Database Redesign The EXISTS keyword will be true if:

Database Redesign The SQL-92 command to change a table name is RENAME TABLE.

Database Redesign Some organizations take the stand that no application should ever employ the true name of a table.

Database Redesign How many copies of the database schema are typically used in the redesign process?

Database Redesign
What SQL command will allow you to change the table STUDENT to add the constraint named GradeCheck that states that the values of the Grade column must be greater than 0?

Database Redesign
What SQL command can be used to delete columns from a table?

Database Redesign
The EXISTS keyword will be true if:

Database Redesign
The SQL-92 command to change a table name is RENAME TABLE.

Database Redesign
Some organizations take the stand that no application should ever employ the true name of a table.

Database Redesign
How many copies of the database schema are typically used in the redesign process?