I am just new to relational algebra probably a pre-step before learning SQL queries. Can you help me make the expressions of relational algebra expression for each of the following queries.
These are the tables contained inside a bus driver database.
- • driver( driver_id, driver_name, age, rating );
- • bus( bus_id, bus_name, color);
- • reserves( driver_id, bus_id, date);
1. Find the colors...
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