What is the primary key, candidate keys, foreign keys, and non-key columns in these two tables? In which normal form is the logical design of the purchases database?
What is the primary key, candidate keys, foreign keys, and non-key columns in these two tables? In which normal form is the logical design of the purchases database?
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
What is the primary key, candidate keys, foreign keys, and non-key columns in these two tables? In which normal form is the logical design of the purchases
![PURCHASE
InvoiceNumber InvoiceDate PreTaxAmount CustomerID
2014-05-05 155.00
2014-05-07
203.00
2014-05-11
75.00
2014-05-15
67.00
2014-05-15
330.00
2014-05-16 25.00
2014-05-26
45.00
2014-06-06
445.00
2014-06-07
72.00
1
2
WN
3
4
in 50
5
7
8
9
1
2
3
4
5
1
3
1
6](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4ceac9a6-87e0-4b90-9ad4-94aa975a9f64%2F656e9848-07b0-4e54-8ef9-4012d4221bd1%2Fkkanla_processed.png&w=3840&q=75)
Transcribed Image Text:PURCHASE
InvoiceNumber InvoiceDate PreTaxAmount CustomerID
2014-05-05 155.00
2014-05-07
203.00
2014-05-11
75.00
2014-05-15
67.00
2014-05-15
330.00
2014-05-16 25.00
2014-05-26
45.00
2014-06-06
445.00
2014-06-07
72.00
1
2
WN
3
4
in 50
5
7
8
9
1
2
3
4
5
1
3
1
6
![PURCHASE_ITE
InvoiceNumber
1
NMT
2
3
4
4
in in 17
5
5
6
8
8
8
00
9
InvoiceLineNumber
1
1
1
1
2
1
2
1
1
1
2
WN
3
1
ItemNumber
1
2
367
4
00
8
10
11
5
9
24
12
14
Retail Price
155.00
120.00
75.00
35.00
32.00
240.00
90.00
25.00
45.00
175.00
215.00
55.00
72.00](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4ceac9a6-87e0-4b90-9ad4-94aa975a9f64%2F656e9848-07b0-4e54-8ef9-4012d4221bd1%2Fcd809j6_processed.png&w=3840&q=75)
Transcribed Image Text:PURCHASE_ITE
InvoiceNumber
1
NMT
2
3
4
4
in in 17
5
5
6
8
8
8
00
9
InvoiceLineNumber
1
1
1
1
2
1
2
1
1
1
2
WN
3
1
ItemNumber
1
2
367
4
00
8
10
11
5
9
24
12
14
Retail Price
155.00
120.00
75.00
35.00
32.00
240.00
90.00
25.00
45.00
175.00
215.00
55.00
72.00
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