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This package provides the following PostgreSQL modules: citext, hstore,
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intarray, isn, ltree, lo, uuid-ossp, and unaccent. The "citext" module provides
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a case-insensitive character string type, citext.
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The "hstore" module implements the "hstore" data type for storing sets of
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key/value pairs within a single PostgreSQL value.
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The "intarray" module provides a number of useful functions and operators for
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manipulating one-dimensional arrays of integers.
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The "isn" module provides data types for the following international product
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numbering standards: EAN13, UPC, ISBN (books), ISMN (music), and ISSN (serials).
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The "ltree" module implements a data type ltree for representing labels of data
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stored in a hierarchical tree-like structure.
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The "lo" module provides support for managing Large Objects (also called LOs or
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BLOBs). This includes a data type "lo" and a trigger "lo_manage."
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The "uuid-ossp" module provides functions to generate universally unique
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identifiers (UUIDs) using one of several standard algorithms.
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"unaccent" is a text search dictionary that removes accents (diacritic signs)
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from lexemes.
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