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    WalMart
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Category > Computer Science Posted 17 Dec 2017 My Price 10.00

What are some issues that occur when usingsequences

need help with question 4, 5 6 codes not working in SQL

ISM 218- Database Systems Assignment#10

Questions1-3areworth3pointseachandshouldbeansweredin3-5sentences.

 

 

 

1.What is an index? How is used in adatabase? Which type of column would make an ideal index?

 

2.Can an index be created in anytable? Whywouldyou NOT want to createan index in a table?

 

3.What is a sequence? Whyare sequences used?What are some issues that occur when usingsequences?

 

 

Questions4-7areworth4pointseach.

 

 

4.Write the codeto createa new tableas shown below and createan indexon the Project_Namecolumn.

 

 

Table Name:Manager

 

ColumnName:

ManagerID

Manager_Name

Project_ID

Project_Name

KeyType:

PrimaryKey

 

 

 

Null/Unique:

Not Null

 

Not Null

Not Null

FKTable:

 

 

 

 

FKColumn:

 

 

 

 

DataType:

INTEGER

VARCHAR

INTEGER

VARCHAR

MaxLength:

7

30

7

30

 

 

5.Write the codeto createan indexon the Project_IDcolumn of the Manager table.

 

6.Write the codeto removethe indexon the Project_Namecolumn of the Manager table.

 

7.Write the codeto createa new tableas shown below and createasequenceon the Patient_ID column.

 

Table Name:Patient

 

ColumnName:

Patient_ID

P_Name

 

 

KeyType:

PrimaryKey

 

 

 

Null/Unique:

Not Null, Unique

NOT NULL

 

 

FKTable:

 

 

 

 

FKColumn:

 

 

 

 

DataType:

INTEGER

VARCHAR

 

 

MaxLength:

7

30

 

 

 

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SophiaPretty
(5)
Status NEW Posted 17 Dec 2017 12:12 PM My Price 10.00

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