Search code examples
I don't understand the answers of this question with natural join and projection...


relational-databaserelational-algebra

Read More
Relational Databases and Mathematics?...


databasemathrelational-databasetheoryrelational-algebra

Read More
Writing a query in strictly relational algebra (AS IN NOT SQL/MYSQL)...


sqlrelational-databaserelationrelational-algebrarelational-division

Read More
Is it possible to decorrelate all correlated SQL subqueries?...


sqltheoryrelational-algebra

Read More
Converting SQL Query with Aggregate Function to Relational Algebra Expression in Apache Calcite - No...


sqlrelational-algebraapache-calcitesql-parser

Read More
Can all SQL queries be represented in Relational Algebra, Domain and Tuple relational calculus...


sqldatabaserelational-databaserelational-algebrarelational-division

Read More
Functional dependencies in database...


databasedatabase-normalizationrelational-algebrafunctional-dependencies

Read More
relational algebra expression for "is null"...


nullrelational-algebra

Read More
changing a sql view query into a relational algebra?...


sqlmysqloracle-databaseviewrelational-algebra

Read More
Will this relational algebra statement return my expectation...


relational-databaserelational-algebra

Read More
Why does Apache Calcite estimates 100 rows for all tables a query contains?...


csvrelational-algebrasql-optimizationapache-calcite

Read More
How can I use a variable in a relational algebra query?...


relational-databaserelational-algebra

Read More
Dependency Preserving Decomposition with a functional dependency doesn't appear in the sub-schem...


database-normalizationrelational-algebrafunctional-dependencies

Read More
Understanding Division in Relational Algebra...


relational-algebrarelational-division

Read More
Natural join when joining attributes contain duplicate tuples...


databaserelational-databaserelational-algebra

Read More
What is the difference between Select and Project Operations...


sqlselectrelational-algebra

Read More
Understanding natural join in Relational algebra...


databaserelational-algebra

Read More
Are these two relations compatible for a union operation?...


databaserelational-databaseunionrelational-algebra

Read More
Challenge!! Example of a valid 4th normal form relation that can perform 5th normal form decompositi...


databasedatabase-designrelational-algebrardbms

Read More
Database Design of a value identified by two Primary Keys...


databaserelational-databaserelational-algebrareferential-integritytuple-relational-calculus

Read More
Represent a subquery in relational algebra...


sqlrelational-algebra

Read More
Find a Max in relational algebra...


relational-databaserelational-algebra

Read More
Why does this cascade of projection not change the projecton result?...


relational-databaserelational-algebra

Read More
Selecting from relation based on other relation...


relational-databaserelational-algebra

Read More
Division Operation on Relational Algebra...


schemarelational-algebrarelational-division

Read More
Seeking extended Divide operator explanation...


relational-algebradividerelational-division

Read More
Natural Join in Relational Algebra - Database Theory...


relational-databaserelational-algebranatural-joindatabase-theory

Read More
Can I do this relational algebra sentence in SQL?...


sqloracle-databaserelational-algebra

Read More
How do I create a 4VL "boolean" type in PostgreSQL?...


postgresqllogicrelational-databaserelational-algebra

Read More
Forming a relational algebra query from an English description...


relational-algebra

Read More
BackNext