How to implement many to many relationship in Salesforce | Junction Object in Salesforce

In this video, Shrey has explained the following things :

- Why there is a need to create many to many relationship in Salesforce?
- What is junction object in Salesforce?
- How junction object helps in creating a many to many relationship?
- Points to consider while creating junction object.

This is part 3 of the relationship videos, find the link to other parts below.

Understanding Relationships in Salesforce (Basic) | How relationship works in Salesforce

What is Master Detail & Lookup relationship in Salesforce? | Different Types of Relationship Fields

Grow your business with THE BEST SALESFORCE IMPLEMENTATION and CONSULTANCY SERVICES

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Shrey is a Chief Executive Officer at Cyntexa which is considered as one of the top Salesforce Consulting Partner in USA, UK, UAE, Australia, Singapore & India having a vibrant team of 100+ certified Salesforce experts which include developers, architects, consultants, administrators, and MVPs.

Shrey took Cyntexa from 5 to 100+ people in less than 1.5 years while multiplying the revenues by 8 times. Shrey has been an entrepreneur since the age of 13 as he was buying and selling stuff and making money in the school itself. Shrey is the Youngest Salesforce MVP in the world who firmly believes in providing value to the people and building long term value-based relationships. His mission is to disrupt the way professional technical services are delivered by bringing back the empathy for the end-user rather than being operational and transactional.

Shrey is popularly known as Salesforce Hulk in the Salesforce ecosystem as he was the first one to start creating videos on Salesforce on his YouTube channel named as Salesforce Hulk and that too at the age of 19. Shrey is also the founder of S2 Labs which is a Salesforce Training Company, being the 1st one to start Salesforce training in Rajasthan, India, and currently selling his courses worldwide. Shrey is also a marvelous speaker who actively presents on topics that revolve around Salesforce and Entrepreneurship in various worldwide conferences. Shrey has also been a Judge in multiple technical and business hackathons organized by the Government of India like Smart India Hackathon.

Shrey is a leader with out of the box thinking who emphasizes not only on hitting the sales targets but also on providing an amazing experience to the customers as well as employees. Shrey believes in building a team with strong values, ethics, and behavior which leads to the amazing culture at Cyntexa.
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[kumara]

I am 41 yr from Dallas, Texas and love your explanation. I am from QA background but follow your videos a lot. I am bit slow in grasping the concepts. So, I watch each video 10 or 15 times ( sometimes even more ) just curious in seeking knowledge in Salesforce. And maybe next year I 'll be ready for some admin positions. Thank you for your service to Salesforce community.

[reshmarays]

We can Crete total of 40 relationships on an object. Limit to create MD relation is 2 for a single object. If we create 2 MD then we can create 38 lookup or else 1 MD and 39 Lookup or 0 MD and 40 lookup relationships.

[mounireddy]

Total of 40 relationship fields we can create per object. We can only create 2 M-D relationship fields per object, in that case 38 lookups can be created. If one M-D relationship field is created than 39 lookups can be created. If no master-detail relationship fields created we can create 40 lookups.

[jazzaround]

Great session shrey.. It was really helpful for me as I was struggling to understand the concept of junction object. You explained it really well. Thanks and keep it up..😊

[trimurthynujella]

Thanks for your valuable information about junction object with clarity

[rizwanshaik]

Excellent💯 Explanation. Concept is clear!, Thank You.

[nataraj]

Total 40 relationships, So 38 look-up and 2 masterdetail,
Not putting this answer for the sake of T shirt but for the simplified way of explaining this concept, this one is very confusing concept (may be for me) but you made me understand this very easily, Thank u very much

[jackgimbert]

Very helpful video, this is a topic I have struggled to grasp for a while, and you made it very clear. Keep up the great content Shrey!

[akulahemasanthoshi]

master detail relationship on object is maximum 2 and lookup relationship on object is maximum of 40
your videos are awesome

[JD-yecs]

Awesome videos Mr. Hulk. I passed Admin 201 with zero experience and only because I watched ALL your videos in 10 days! Yayy. Thank you. I need to learn Service Cloud in detail. Will you be making any Service Cloud videos? Any advice how I can learn it in detail?

[ankurkansal]

We can create maximum of 40 relationships on objects .Maximum 2 master-detail and 38 Lookup or 0 Master 40 lookup or 1 master and 39 lookup but there cannot be more than 2 mater-detail on single object.

[sreekumargopakumar]

so great video again Shrey

So when one of the objects is deleted what happens to the junction object.
Again when both of the objects are deleted what happens to the junction object?

Answer: 1st case - Junction object is deleted and moved to the recycle bin.
2nd case Junction object is deleted permanently

[benazeerinamdar]

Please create a video on Apex, visual force, lightning coding etc .. Your videos are fab

[harshpatle]

Lookup relationship
For custom objects - 40
For standard objects -25

Masterdetail relationship
2 for an object

[johnbritolima]

That was a very good explanation. Thank you very much.

[saurabhsood]

total 40 relationship we can create it might be...
1) 38 lookups and 2 masterdetail or
2) 39 lookups and 1 master detail or
3) 40 lookups or 0 masterdetail relationships

[ankitkumar]

Great content to clear concepts! Thank you so much, Shrey Sir! One question though - you said, 'Look n Feel' is derived from Master object'. What can be understood as look and feel - page layout? :)

[rajwaghamode]

very good Shrey make more video on different different concepts like this video thank

[darshanavarade]

Superb vdo. You explained it in easy way.. Thnks!!

[nadegeelikya]

Once again thank you so much for your support and help. You are amazing and funny