Consider a database with these tables, INGREDIENT and DISTRIBUTOR: DIST_ID DIST NAME Sundown Ranch 1 2...

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Consider a database with these tables, INGREDIENT and DISTRIBUTOR: DIST_ID DIST NAME Sundown Ranch 1 2 Wright Bakery 3 Harry's Produce ING_ID 2 3 4 5 ING NAME Beef Cheese Roll Onion Lettuce DIST_ID 1 1 2 3 3 DIST STATE PA NJ NY a. Explain in plain English what the relational algebra ODIST_ID=3(INGREDIENT) does, and state how many rows would be in the result of that expression. c. Write the relational algebra to select all distributors that are in either PA or NJ. Note: Your answer should make two separate selections and combine them with a binary operator; an answer that uses a single selection will not receive full marks. d. Draw a table showing the result of INGREDIENT D DISTRIBUTOR. Note: Assume all joins are natural joins. e. Suppose you want to see a relation showing which state each ingredient comes from, with all extraneous information removed; you only want to see the name of the ingredient and the state. What relational algebra expression would give you this? f. What three fundamental operators in relational algebra can you combine to achieve a natural join? Consider a database with these tables, INGREDIENT and DISTRIBUTOR: DIST_ID DIST NAME Sundown Ranch 1 2 Wright Bakery 3 Harry's Produce ING_ID 2 3 4 5 ING NAME Beef Cheese Roll Onion Lettuce DIST_ID 1 1 2 3 3 DIST STATE PA NJ NY a. Explain in plain English what the relational algebra ODIST_ID=3(INGREDIENT) does, and state how many rows would be in the result of that expression. c. Write the relational algebra to select all distributors that are in either PA or NJ. Note: Your answer should make two separate selections and combine them with a binary operator; an answer that uses a single selection will not receive full marks. d. Draw a table showing the result of INGREDIENT D DISTRIBUTOR. Note: Assume all joins are natural joins. e. Suppose you want to see a relation showing which state each ingredient comes from, with all extraneous information removed; you only want to see the name of the ingredient and the state. What relational algebra expression would give you this? f. What three fundamental operators in relational algebra can you combine to achieve a natural join?

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a The relational algebra expression ODISTID3INGREDIENT selects all rows from the INGREDIENT table wh... View the full answer