To understand multi-tenancy as a database concept it is easiest to start with the original derivation of the term, which, of course, comes from the familiar world of real estate. An apartment building provides multi-tenant housing, serving any number of tenants—from individuals who live alone, to couples, groups, and families of various sizes. Within the apartment building, each of these tenants has its own set of requirements for accommodations, storage space, and utilities.
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