Relational Algebra: a tutorial

The branch relation

branch-name	branch-city	assets
Downtown Redwood Perryridge Mianus Round Hill Pownal North Town Brighton	Brooklyn Palo Alto Horseneck Horseneck Horseneck Bennington Rye Brooklyn	9000000 2100000 1700000 400000 8000000 300000 3700000 7100000

The customer relation

customer-name	customer-street	customer-city
Jones Smith Hayes Curry Lindsay Turner Williams Adams Johnson Glenn Brooks Green	Main North Main North Park Putnam Nassau Spring Alma Sand Hill Senator Walnut	Harrison Rye Harrison Rye Pittsfield Stamford Princeton Pittsfield Palo Alto Woodside Brooklyn Stamford