Writing Sql Statements

Running head : SQL 3 .7CREATE mesa positron sack tomography_OWNEROwnerID numeral (10 ) base Key nominate Varchar (20 bid numerical (10Email Varchar (50p OwnerID - is taken as a mathematical entropy field and also marks as a old samaraName - is taken to be Varchar data typePhone - The Phone number is again taken as a 10 digit numeric data fieldEmail - It is taken as Varchar with size 50 as it can be alphanumeric in nature3 .8CREATE TABLE pamper p PetID Numeric (10 ) Primary KeyName Varchar (20Type Varchar (10Breed Varchar (10DOB DateTimeOwnerID Numeric (10 ) not trivialEvery column can non be made NOT NULL as the attributes be absolutely implyd to be make full for storing information or so the pets Only the primary key and the foreign key field would be NOT NULL as they would always require a value3 .

9ALTER TABLE favorite ADD modesty LINK_FK hostile KEY (OwnerID ) REFERENCES PET_OWNER (OwnerID3 .10ALTER TABLE PET ADD CONSTRAINT LINK_FK_1 immaterial KEY (OwnerID REFERENCES PET_OWNER (OwnerID ) ON invalidate CASCADE3 .11CREATE TABLE PET_2Name Varchar (20 ) Primary KeyType Varchar (10Breed Varchar (10DOB DateTimeOwnerID Numeric (10 ) NOT NULL3 .12PET is a get out design than PET_2 as name calling of PET_2 can be similar so it is usually not suggested to have Name as a primary key3 .13ALTER TABLE [dbo] .[PET] DROP CONSTRAINT [LINK_FK_1]DROP TABLE PET_OWNER3 .14ALTER TABLE [dbo] .[PET] DROP CONSTRAINT...If you deprivation to get a full essay, order it on our website: ! OrderCustomPaper.com

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