# Relational Algebra - 3

# Relational Algebra - 3

- HC
hiteshchechani29 + 1 comment What is Equijoins vs Natural Join

AllisonP + 1 comment An Equijoin is a Theta Join that only involves equalities; for reference, a Theta Join joins on a formula (theta) that consists of arithmetic comparisons between attributes of the sets being joined. A Natural Join is an Equijoin that returns all tuples agreeing on the values of their common attributes.

chadwalt + 0 comments When do we get to use them?

- KI
ken_ingram + 0 comments This particular challenge is the first I've heard of equijoins.

Where are they first discussed in any text?

dnadanushka + 0 comments Could someone suggest me a book to learn relational algebra?

- MS
Mkce_15bcs2103 + 0 comments why is the points which we have gained in distributes systems is not including in my hackos?? pls tell me i hav ernes so many points in that??

mega_mind + 1 comment The answer wouldn't lock.

https://drive.google.com/file/d/0ByYJcD7ZxhFWVGdmRHlXeE9iWk0/view?usp=sharing

- TP
thiloplanz + 0 comments A Natural Join also contains equalities ...

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