Please describe the following terms in with at most 4 sentences, and then stick it in either Alon's box in 114, or Rachel's in 127, or send us mail with it. The purpose of this is for us to evaluate how much the class learned as a whole, not to evaluate individual's performance. Thus you do not need to write your name.

• object relational database
• materialized view
• datalog
• relational schema
• OQL
• semistructured data
• sort-merge join
• nested loop join
• Boyce Codd normal form
• apriori algorithm
• data warehouse
• System R
• rewriting queries using views
• clustered index
• mediated schema for data integration