1. Where the serious GIS work takes place.
Working with Tables
Where the serious GIS work takes place.

2. One Feature – One Record

3. One Feature – One Record
Field or
Column
Record or
Row
One Feature – One Record

4. Data Types will be discussed in the next lecture.
Field Requirements
Use unique column names
Define the data type to be stored
Appropriate width for attribute value.
Data Types will be discussed in the next lecture.

5. Joining and Relating Tables
A Common Field

6. One to One Relationship
Join the tables.

7. Many to One
Join the tables.

8. One to Many Relationship
Relate the tables.

9. Many to Many
Relate the tables.

10. Joining Tables

11. Joining to another table based on atributes.
This is the table you are joining
These are the common fields

12. Join Results Original Owners.dbf
Original Coffee Shop Attribute Table (points)

13. Joined Tables The originals remain separated They can be unjoined
You can use joined data to symbolize and classify.
You can create statistics, charts and reports.

14. What happens if you join when you should relate for a One to Many?
Shape
Area
Name ID
point
32456
Smith 71
23412
Jones 64
16534
Green 22 ID
Tax_Val
Income 71
1400
42000
723
5701 64
3218
89055
127
879 22
465
2271
4213
120000 ? ?
Join will combine for the first record and then ignore the rest.
Relate will connect all the records. ?

15. What happens if you join in a Many to One
Shape
Area
Name
Route
point
17864
Allan 14
Point
22341
Rios
12221
Lee 9
32456
Smith
23412
Jones 27
16534
Green
Route
Day
Comp 14 M
UPS 9 T
FEDX 27 F
AIRB
The records are duplicated in the Joined file

16. Multiple Joins and Relates (Daisy Chains)
Route
Route

17. Related Tables

18. Summarize Data

19. Create a Graph from Summarized, Selected Data

21. Chart of joined, summarized, selected data.