Contents
- Relational data mode, Schema vs. instance
- Relational algebra, Selection and exemple
- More on selection, Projection
- Cross product, A note a column ordering
- Derived operator: join, Derived operator: natural join
- Union, Difference, Derived operator: intersection
- Renaming example, Expression tree notation
- Summary of core operators, Summary of derived operators
- An exercise, A trickier exercise
- Classification of relational operators, Why is “ ” needed for “highest”?
- Extensions to relational algebra, Why is r.a. a good query language?
- Relational calculus, Limits of relational algebra
| Description : | Download free Introduction to Databases, Relational Model and Algebra course tutorial, a PDF file by Jun Yang, Brett Walenz. |
| Level : | Beginners |
| Created : | April 1, 2016 |
| Size : | 281.56 KB |
| File type : | |
| Pages : | 41 |
| Author : | Jun Yang, Brett Walenz |
| Downloads: | 965 |
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