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D427 OA Example Questions FINAL EXAM 2024 WITH 100- CORRECT ANSWERS
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D427 OA Example Questions FINAL EXAM 2024 WITH 100- CORRECT ANSWERS
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D427 OA Example Questions FINAL EXAM 2024 WITH 100%CORRECT ANSWERS
Terms in this set (13)
ALTER TABLE table_name
Add/remove Primary key to table
ADD PRIMARY KEY (column_name)
ALTER TABLE table_name
remove a primary key from a table
DROP PRIMARY KEY;
ALTER TABLE Orders
Add Foreign Key
ADD FOREIGN KEY (PersonID) REFERENCES Persons(PersonID);
ALTER TABLE Orders
Remove Foreign Key
DROP FOREIGN KEY FK_PersonOrder;
CREATE VIEW view_name AS
SELECT column1, column2, ...
FROM table_name
add a view
WHERE condition;
REMEMBER AS PORTION
remove a view DROP VIEW view_name;
add an index to a table column CREATE INDEX index_name ON table_name (column_name);
remove an index from a table column DROP INDEX index_name ON table_name;
remove rows from a table based on DELETE FROM table_name
conditions WHERE condition;
remove rows from a table with specific DELETE FROM table_name
values WHERE column_name = value;
INSERT INTO table_name (column1, column2, ...)
insert values into a table
VALUES (value1, value2, ...);
UPDATE table_name
update row values in a table based on
SET column1 = new_value1, column2 = new_value2, ...
conditions
WHERE condition;
ALTER TABLE table_name
add a column to an existing table
ADD column_name data_type;
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