chapter 7
SQL cursor
Because SQL statements are table-oriented, whereas programs are variable-oriented, the results of SQL statements used in programs are accessed using a(n) _______.
true
Because SQL statements are table-oriented, whereas programs are variable-oriented, the results of SQL statements used in programs are accessed using an SQL cursor.
pseduofiles
Because SQL statements are table-oriented, whereas programs are variable-oriented, the results of SQL statements used in programs are treated as _________.
true
Because SQL stored procedures allow and encourage code sharing among developers, stored procedures give database application developers the advantages of less work, standardized processing, and specialization among developers.
false
If a trigger is being written to enforce referential integrity actions, you cannot use an INSTEAD OF trigger.
false
If the table PRODUCT has a column PRICE that has the data type Numeric (8,2), the value 98765 stored in that field will be displayed by the DBMS as 98765.00
43.21
If the table PRODUCT has a column PRICE, and PRICE has the data type Numeric (7,2), the value 4321 with be displayed by the DBMS as ____ .
true
If the values in an SQL view are changeable through the view itself, the SQL command UPDATE is used to change the values.
UPDATE
If the values in an SQL view are changeable through the view itself, the SQL command ______ is used to change the values.
true
If the values in an SQL view are not changeable through the view itself, you may still be able to update the view by using unique application logic. In this case, the specific logic is placed in an INSTEAD OF trigger.
INSTEAD OF
If the values in an SQL view are not changeable through the view itself, you may still be able to update the view by using unique application logic. In this case, the specific logic is placed in an ________ trigger.
JOIN...ON
In addition to the standard SQL join command structure, joins can be created using the SQL syntax __________.
more
In terms of application security, stored procedures are _________ secure than application code.
true
Joins that show only matching rows from the joined tables in their results are called inner joins.
true
Joins that show the matching rows from the joined tables plus unmatched rows from one other table in their results are called outer joins.
name of the constraint
One advantage of using the CONSTRAINT command to define a primary key is that the database designer controls the _________.
INSERT
One or more rows can be added to a table by using the ________ statement.
false
Outer joins can be either up joins or down joins.
DELETE
Rows can be removed from a table by using the SQL keyword _______.
UPDATE
Rows in a table can be changed by using the_______statement.
triggers
SQL ______ can be used when the DBMS receives an INSERT request.
code sharing
SQL stored procedures give database application developers the advantages of less work, standardized processing, and specialization among developers because stored procedures allow and encourage _______ among developers.
false
SQL triggers are created using the SQL ADD TRIGGER statement.
CREATE TRIGGER
SQL triggers are created using the SQL __________ statement.
true
SQL triggers are used for providing default values, validity checking, updating views, and performing referential integrity actions.
true
SQL triggers can be used when the DBMS receives an insert request.
INSERT, UPDATE, DELETE
SQL triggers can be used with SQL operations ________, ________, and ________.
BEFORE, INSTEAD OF, AFTER
SQL triggers use the ANSI SQL keywords _______, ________, and ________.
true
SQL views are constructed from SELECT statements.
SELECT
SQL views are constructed from _______ statements.
true
SQL views are updateable when the view is based on a single table with no computed columns, and all non-null columns are present in the view.
true
SQL views can be use used to provide a level of indirection between data processed by applications and the data actually stored in the database tables.
true
SQL views can be used to hide columns.
columns
SQL views can be used to hide table _________ .
true
Stored procedures have the advantage of greater security, decreased network traffic, SQL optimized by the DBMS compiler, and code sharing.
true
The Oracle DBMS supports the SQL trigger BEFORE.
BEFORE, INSTEAD OF, AFTER
The Oracle DBMS supports the SQL triggers _______, _________ , and _______.
BEFORE
The SQL Server DBMS does not support the SQL trigger ______.
false
The SQL Server DBMS supports the SQL trigger BEFORE.
false
The SQL command CREATE USER VIEW is used to create a virtual table.
true
The SQL command SELECT is used to retrieve view instances.
CREATE VIEW
The SQL command _______ is used to create a virtual table.
SELECT
The SQL command _______ is used to retrieve view instances.
true
The SQL keyword CONSTRAINT is used to define one of five types of constraints.
false
The SQL keyword CONSTRAINT is used to limit column values to specific values.
true
The SQL keyword CREATE is used to name a new table and describe the table's columns.
false
The SQL keyword DELETE is used to delete a table's structure.
false
The SQL keyword MODIFY is used to change a column value.
false
The SQL keyword MODIFY is used to change the structure, properties or constraints of a table.
true
The SQL keyword PRIMARY KEY is used to designate the column(s) that are the primary key for the table.
true
The SQL keyword UNIQUE is used to define alternative keys.
CREATE
The SQL keyword _____ is used to name a new table and describe the table's columns.
ALTER
The SQL keyword ______ is used to change the structure, properties or constraints of a table.
CHECK
The SQL keyword ______ is used to limit column values to specific values.
UNIQUE
The SQL keyword _______ is used to define an alternate key.
CONSTRAINT
The SQL keyword _________ is used in conjunction with the SQL keywords PRMARY KEY and FOREIGN KEY.
DROP
The SQL keyword ______is used to delete a table's structure.
SET
The SQL keyword________is used to specify a new value when changing a column value.
true
Unless it is being used to copy data from one table to another, the SQL INSERT command can be used to insert only a single row into a table.
never distributed
Unlike application code, stored procedures are _______to the client computers.
true
Unlike application code, stored procedures are never distributed to the client computers.
VALUES
Data values to be added to a table are specified by using the _______statement.
embedded SQL
A set of SQL statements stored in an application written in a standard programming language is called ________.
true
A set of SQL statements stored in an application written in a standard programming language is called embedded SQL.
false
A stored program that is attached to a table or view is called a stored procedure.
SQL trigger
A stored program that is attached to a table or view is called a(n) ________.
stored procedure
A stored program that is attached to the database is called a ________ .
false
A stored program that is stored within the database and complied when used is called a trigger.
ORDER BY
According to SQL-92, statements used to construct views cannot contain the _________ clause.
false
According to the SQL-92, statements used to construct views cannot contain the WHERE clause.
view
An SQL virtual table is called a _______.
true
An SQL virtual table is called a view.
false
The values in an SQL view are always changeable through the view itself.
the view itself
The values in an SQL view are not always changeable through ________.
an SQL trigger
To set a column value to an initial value that is selected according to some business logic, you would use __________ .
false
To set a column value to an initial value that is selected according to some business logic, you would use the SQL DEFAULT constraint with the CREATE TABLE command.
true
The SQL syntax JOIN . . . ON can be used as alternate way of writing an SQL join statement.
the trigger code
When a trigger is fired, the DBMS makes the appropriate data available to ___________ .
updateable
When an SQL view is based on a single table with no computed columns, and all non-null columns are present in the view, then the view is ________.
false
When the correct SQL command is used to delete a table's structure, the command can only be used with a table that has already had its data removed.
