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In the design of DBMS, the identity map pattern is a database access design pattern used to improve performance by providing a context-specific, in-memory cache to prevent duplicate retrieval of the same object data from the database.
In mathematics, an identity function, also called an identity relation, identity map or identity transformation, is a function that always returns the value that was used as its argument, unchanged. That is, when f is the identity function, the equality f(x) = x is true for all values of x to which f can be applied.
Cultural mapping is an emerging interdisciplinary field in which a range of perspectives are used as: a mode of inquiry and a methodological tool in urban planning, cultural sustainability, and community development that makes visible the ways local stories, practices, relationships, memories, and rituals constitute places as meaningful locations."
In mathematics, the constant sheaf on a topological space associated to a set is a sheaf of sets on whose stalks are all equal to .It is denoted by _ or .The constant presheaf with value is the presheaf that assigns to each open subset of the value , and all of whose restriction maps are the identity map .
Cultural-historical activity theory (CHAT) is a theoretical framework [1] to conceptualize and analyse the relationship between cognition (what people think and feel) and activity (what people do). [2] [3] [4] The theory was founded by L. S. Vygotsky [5] and Aleksei N. Leontiev, who were part of the cultural-historical school of Russian ...
the inclusion, a retraction is a continuous map r such that =, that is, the composition of r with the inclusion is the identity of A. Note that, by definition, a retraction maps X onto A. A subspace A is called a retract of X if such a retraction exists. For instance, any non-empty space retracts to a point in the obvious way (any constant map ...
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A culture area is a concept in cultural anthropology in which a geographic region and time sequence is characterized by shared elements of environment and culture. [3]A precursor to the concept of culture areas originated with museum curators and ethnologists during the late 1800s as means of arranging exhibits, combined with the work of taxonomy.