Final answer:
To find the sids of suppliers who supply every part, use the division operator in relational algebra.
Step-by-step explanation:
To find the sids of suppliers who supply every part, you can use the concept of division in relational algebra. The division operator is denoted by ÷. Here's how you can write the query in relational algebra:
- Select the sids of all suppliers who supply every part: πsid(SUPPLIER ÷ PART)
- Retrieve the result of the division query: πsid(SUPPLIER ÷ PART)