Translate the relational algebra expression in (b) into an equivalent expression using pushing of selections and projections.
Suppose a database has the following schema:
Trip(fromAddrId: INTEGER, toAddrId: INTEGER, date: DATE)
Address(id: INTEGER, street: STRING, townState: STRING)
Computer Science & Information Technology
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Which port would you open in a firewall to enable encrypted terminal sessions?
a- tcp/20 and tcp/21 b- tcp/443 c- tcp/143 d- tcp/22 e- tcp/23
Computer Science & Information Technology
A(n) ________ attaches programming logic to tables
A) embedded macros B) data macros C) stand-alone macros D) event-driven macros
Computer Science & Information Technology