Can I read Relational Algebra Operations Explained on EtoBox?
Relational Algebra Operations Explained by Phemelo Moloi is a document available to read on EtoBox.
What is Relational Algebra Operations Explained about?
The main operations of relational algebra are selection, projection, join, product, intersection, union, difference, and divide. The natural join returns tuples where the common attributes match and drops duplicate columns, while the outer join also returns tuples without matches and fills in null values. Projection returns a vertical subset of columns, while selection returns a horizontal subset of rows based on a criterion. An example database is used to illustrate the differences between natural join, eq
- Author
- Phemelo Moloi
- Language
- EN