This demonstration explains in details difference between join and relates in ArcGIS. Also, steps for successful join and relates are presented.

1. GIS

2. ‫د‬.‫ﺳﮭــﻰ‬‫أﺣﻣد‬
‫وﺟود‬‫ﯾﻣﻧﻊ‬ ‫اﻟﺟداول‬ ‫ﻣن‬ ‫ﻋدد‬ ‫ﻓﻰ‬ ‫اﻟﺑﯾﺎﻧﺎت‬‫اﻟﺑﯾﺎﻧ�ﺎت‬ ‫ﻗﺎﻋ�دة‬ ‫ﻓ�ﻲ‬ ‫اﻟﻣﻌﻠوﻣ�ﺎت‬ ‫ﺗﻛرار‬‫ﻣﺧز‬ ‫ﺳ�ﺗﻛون‬ ‫اﻟﺑﯾﺎﻧ�ﺎت‬ ‫ﻷن‬‫ﻣ�رة‬ ‫ﻧ�ﺔ‬
‫ﺟدول‬ ‫ﻓﻲ‬ ‫ﻓﻘط‬ ‫واﺣدة‬‫اﻟﻔﺋ�ﺔ‬ ‫ﺣﺳ�ب‬ ‫وﺗﻘﺳ�ﯾﻣﺎﺗﮭم‬ ‫ﻟﻠﺳ�ﻛﺎن‬ ‫وﺟ�دول‬ ‫اﻟﺗﻌﻠﯾﻣﯾﺔ‬ ‫ﻟﻠﺣﺎﻟﺔ‬ ‫ﺟدول‬ ‫وﺟود‬ ‫ﻣﺛل‬ ،‫واﺣد‬‫اﻟﻌﻣرﯾ�ﺔ‬
‫وھﻛذا‬ ‫اﻟﺻﺣﯾﺔ‬ ‫ﻟﻠﺧدﻣﺎت‬ ‫اﺧر‬ ‫وﺟدول‬...
‫ﺎ‬ً‫ﻌ‬‫ﻣ‬ ‫اﻟﺟدوﻟﯾن‬ ‫رﺑط‬ ‫او‬ ‫ﺿم‬ ‫ﯾﻣﻛن‬ ،‫ﻣﺎ‬ ‫ﺟدول‬ ‫ﻓﻲ‬ ‫ﻣوﺟودة‬ ‫ﻏﯾر‬ ‫ﻣﻌﻠوﻣﺎت‬ ‫إﻟﻰ‬ ‫ﺗﺣﺗﺎج‬ ‫ﻋﻧدﻣﺎ‬ ‫ﻟذا‬.
GIS

3. Relate Join
‫ﺿم‬ ‫ﯾﺗم‬‫اﻟﺟدوال‬‫ﺑﯾﻧﮭﻣﺎ‬ ‫ﻣﺷﺗرك‬ ‫ﺣﻘل‬ ‫وﺟود‬ ‫أﺳﺎس‬ ‫ﻋﻠﻰ‬.‫ﯾﺗم‬‫رﺑط‬‫ﻣﺷﺗرك‬ ‫ﺣﻘل‬ ‫وﺟود‬ ‫أﺳﺎس‬ ‫ﻋﻠﻰ‬ ‫اﻟﺟدوال‬‫ﺑﯾﻧﮭﻣﺎ‬.
‫ﻧﻘوم‬‫ﺑﻌﻣل‬Join‫ﺑﯾن‬‫طﺑﻘﺔ‬‫وطﺑﻘﺔ‬‫أو‬‫طﺑﻘﺔ‬‫وﺟدول‬‫ﻋﻧدﻣ‬‫ﺎ‬
‫ﺗﻛون‬‫اﻟﻌﻼﻗﺔ‬:
•one-to-one
•many-to-one
‫ﻧﻘوم‬‫ﺑﻌﻣل‬Relate‫ﺑﯾن‬‫طﺑﻘﺔ‬‫وطﺑﻘﺔ‬‫أو‬‫طﺑﻘﺔ‬‫وﺟدول‬
‫ﻋﻧدﻣﺎ‬‫ﺗﻛون‬‫اﻟﻌﻼﻗﺔ‬:
•one-to-many
•many-to-many
‫ﻻ‬‫ﯾﮭم‬‫ان‬‫ﯾﻛون‬‫اﺳم‬‫اﻟﻌﻣود‬‫ﻣﺗطﺎﺑﻖ‬‫ﻟﻛن‬‫ﯾﺟب‬‫ان‬‫ﺗﺗطﺎ‬‫ﺑﻖ‬
‫ﻧوع‬‫اﻟﺑﯾﺎﻧﺎت‬‫ﺑﯾن‬‫اﻟﻌﻣودﯾن‬‫ﺑﻣﻌﻧﻰ‬‫ان‬‫ﯾﻛون‬‫ﻛﻼھﻣﺎ‬
String‫او‬‫ﻛﻼھﻣﺎ‬integers‫و‬‫ھﻛذا‬.
‫ﻻ‬‫ﯾﮭم‬‫ان‬‫ﯾﻛون‬‫اﺳم‬‫اﻟﻌﻣود‬‫ﻣﺗطﺎﺑﻖ‬‫ﻟﻛن‬‫ﯾﺟب‬‫ان‬‫ﺗﺗطﺎ‬‫ﺑﻖ‬
‫ﻧوع‬‫اﻟﺑﯾﺎﻧﺎت‬‫ﺑﯾن‬‫اﻟﻌﻣودﯾن‬‫ﺑﻣﻌﻧﻰ‬‫ان‬‫ﯾﻛون‬‫ﻛﻼھﻣﺎ‬
String‫او‬‫ﻛﻼھﻣﺎ‬integers‫و‬‫ھﻛذا‬.
‫ﺗرﺗﯾب‬‫اﻟﺑﯾﺎﻧﺎت‬‫ﻓﻰ‬‫اﻻﻋﻣدة‬ ‫او‬ ‫اﻟﺻﻔوف‬‫اھﻣﯾﺔ‬ ‫ﻻ‬‫ﻟﮫ‬. ‫ﺗرﺗﯾب‬‫اﻟﺑﯾﺎﻧﺎت‬‫ﻓﻰ‬‫اﻻﻋﻣدة‬ ‫او‬ ‫اﻟﺻﻔوف‬‫اھﻣﯾﺔ‬ ‫ﻻ‬‫ﻟﮫ‬.
‫اﻟطﺑﻘﺔ‬ ‫ﺟدول‬ ‫ﻓﻰ‬ ‫اﻟﺟداول‬ ‫ﺿم‬ ‫ﻧﺗﯾﺟﺔ‬ ‫ﺗظﮭر‬‫ﯾ‬ ‫واﻧﻣﺎ‬ ‫اﻟطﺑﻘﺔ‬ ‫ﺟدول‬ ‫ﻓﻰ‬ ‫اﻟﺟداول‬ ‫ﺿم‬ ‫ﻧﺗﯾﺟﺔ‬ ‫ﺗظﮭر‬ ‫ﻻ‬‫ﻣﻛن‬
‫اﻟطرق‬ ‫ﻣن‬ ‫ﺑﻣﺟﻣوﻋﺔ‬ ‫اظﮭﺎرھﺎ‬.
‫د‬.‫ﺳﮭــﻰ‬‫أﺣﻣد‬GIS

4. ‫د‬.‫ﺳﮭــﻰ‬‫أﺣﻣد‬

5. Join table
• Several tables or layers can be joined to a single table or layer
• Target table and a join table have common field names
Join attribute table
with Excel table
One-to-one
GIS ‫د‬.‫ﺳﮭــﻰ‬‫أﺣﻣد‬
Target table

6. • There is only one record for each spatial feature
Join attribute table
with attribute table
One-to-one
GIS ‫د‬.‫ﺳﮭــﻰ‬‫أﺣﻣد‬

7. Source Table
Destination Table
Target Table
Master Key
Foreign Key
*‫اﻟﺗرﺗﯾب‬‫ﻻ‬‫اھﻣﯾﺔ‬‫ﻟﮫ‬‫ﻻن‬‫اﻟﻌﻣود‬‫اﻟﻣﺷﺗرك‬‫ھذا‬‫ﺗﻛون‬‫ﺟﻣﯾﻊ‬‫اﻟﻘﯾم‬‫ﺑﺔ‬‫ﻗﯾم‬‫ﻏﯾر‬‫ﻣﺗﻛررة‬"Unique
Values"‫ﻟذﻟك‬‫ﻻ‬‫ﯾﮭم‬‫اﻟﺗرﺗﯾب‬
One-to-one
‫د‬.‫ﺳﮭــﻰ‬‫أﺣﻣد‬

8. GIS
One-to-one
‫د‬.‫ﺳﮭــﻰ‬‫أﺣﻣد‬

9. Exercise 1
keep all records
‫ﻣﺗﻛررة‬ ‫ﻏﯾر‬ ‫ﻗﯾم‬
One-to-one
‫د‬.‫ﺳﮭــﻰ‬‫أﺣﻣد‬

10. Result 1
‫ﻣﺗﻛررة‬ ‫ﻏﯾر‬ ‫ﻗﯾم‬
One-to-one
‫د‬.‫ﺳﮭــﻰ‬‫أﺣﻣد‬

11. Exercise 2
matching records
‫ﻣﺗﻛررة‬ ‫ﻏﯾر‬ ‫ﻗﯾم‬
One-to-one
‫د‬.‫ﺳﮭــﻰ‬‫أﺣﻣد‬

12. Result 2
‫ﻣﺗﻛررة‬ ‫ﻏﯾر‬ ‫ﻗﯾم‬
One-to-one
GIS ‫د‬.‫ﺳﮭــﻰ‬‫أﺣﻣد‬

13. Exercise 3
keep all records
‫ﻣﺗﻛررة‬ ‫ﻏﯾر‬ ‫ﻗﯾم‬
One-to-one
‫د‬.‫ﺳﮭــﻰ‬‫أﺣﻣد‬

14. Result 3
One-to-one
GIS ‫د‬.‫ﺳﮭــﻰ‬‫أﺣﻣد‬
‫ﻣﺗﻛررة‬ ‫ﻏﯾر‬ ‫ﻗﯾم‬

15. ‫ﻣﺗﻛررة‬ ‫ﻗﯾم‬
Many-to-one
GIS ‫د‬.‫ﺳﮭــﻰ‬‫أﺣﻣد‬

16. Source Table
Destination Table
Target Table
Master Key
Foreign Key
‫ﻣﺗﻛررة‬ ‫ﻗﯾم‬
Many-to-one
‫د‬.‫ﺳﮭــﻰ‬‫أﺣﻣد‬

17. ‫د‬.‫ﺳﮭــﻰ‬‫أﺣﻣد‬

18.  The associated data isn't appended to the layer's attribute table like it is
with a join. Instead, you can access the related data when you work with
the layer's attributes.
Relate Table
One-to-many
GIS ‫د‬.‫ﺳﮭــﻰ‬‫أﺣﻣد‬

19. Source Table
Destination Table
Target Table
Foreign KeyMaster Key
One-to-many
‫د‬.‫ﺳﮭــﻰ‬‫أﺣﻣد‬

20. Relate Table
‫د‬.‫ﺳﮭــﻰ‬‫أﺣﻣد‬
Many-to-many

21. ‫د‬.‫ﺳﮭــﻰ‬‫أﺣﻣد‬

22. ‫د‬.‫ﺳﮭــﻰ‬‫أﺣﻣد‬