Exam (elaborations)

CIS 407 final Exam Questions and answers, Graded A+/ 2024/25 Exam PREDICTOR PAPER

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Course
CIS 407

Institution
CIS 407

CIS 407 final Exam Questions and answers, Graded A+ What is the difference between DDL, DML, and DCL? Examples? - -DDL (data definition language) = define and manage structure of the database ex. create, alter, drop table DML (data manipulation language) = manipulate data ex. insert into t...

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CIS 407 final Exam Questions and
answers, Graded A+

What is the difference between DDL, DML, and DCL? Examples? - ✔✔-DDL (data definition language) =

define and manage structure of the database

ex. create, alter, drop table

DML (data manipulation language) = manipulate data

ex. insert into table, update, delete from

DCL (data control language) = controls access to data

ex. grant, revoke

How to create a table in SQL - ✔✔-CREATE TABLE name (

how to alter a table in SQL - ✔✔-ALTER TABLE name

,alters table structure

how to drop a table in SQL - ✔✔-DROP TABLE name;

How to insert data into a table - ✔✔-INSERT INTO name (columns being inserted into)

VALUES (values inserted)

adds records

how to delete data in a table - ✔✔-DELETE FROM name

removes records

How to Update data (SQL) - ✔✔-UPDATE name

modifies existing records

, how to create relationships among tables - ✔✔-using foreign keys

Foreign Key (TableANum) REFERENCES TableA (TableANum),Foreign Key (TableBID) REFERENCES TableB

(TableBID))

how to add column or table constraints - ✔✔-ALTER TABLE Name

ADD new_column data_type

ALTER COLUMN column_name new_data_type

DROP COLUMN column_name

how to reverse commands - ✔✔-ALTER, DELETE FROM, UPDATE

what are the different data types - ✔✔-tinyint

smallint

Int

decimal (p,s)

date: YYYY-MM-DD char(n): where char(10) means a fixed length of 10 characters and missing characters

filled with blank spaces

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Exam (elaborations)

CIS 407 final Exam Questions and answers, Graded A+/ 2024/25 Exam PREDICTOR PAPER

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