$5\mathrm{.}4\mathrm{.}1$: Strong and weak entities.

$614564\mathrm{.}3892948.$qx$3$zqy$7$

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A real estate company manages several office buildings, with office suites and meeting rooms. Each building has a unique number. Office suites are identified by building number and suite name. Meeting rooms are identified by building number and room number.

OfficeBuilding

OfficeSuite

MeetingRoom

Select the correct identifying entity.