Question: Query Optimization and Execution Consider the following oversimplified schema for SELECT* a database to store a social network of friends and FROM Friend fi, Friend

Query Optimization and Execution Consider the following oversimplified schema for SELECT*

Query Optimization and Execution Consider the following oversimplified schema for SELECT* a database to store a social network of friends and FROM Friend fi, Friend f2, Likes 1 the Web pages they like, and the query to the right. WHERE f1. uidi - 1234 AND Friend (uid1 int, uid2 int); f1.uid2f2.uid1 AND f1.uid1l.uid AND 1 . URL = " " ; Likes (uid int, URL char (120)); (9) (1 mark) Draw the most optimized plan for the query, using logical query optimization only

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