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erwin Data Modeler (stylized as erwin but formerly as ERwin) is computer software for data modeling.Originally developed by Logic Works, erwin has since been acquired by a series of companies, before being spun-off by the private equity firm Parallax Capital Partners, which acquired and incorporated it as a separate entity, erwin, Inc., managed by CEO Adam Famularo.
Dimensional models are more denormalized and optimized for data querying, while normalized models seek to eliminate data redundancies and are optimized for transaction loading and updating. The predictable framework of a dimensional model allows the database to make strong assumptions about the data which may have a positive impact on performance.
The name is a three-letter acronym for DataBase Manager, and can also refer to the family of database engines with APIs and features derived from the original dbm. The dbm library stores arbitrary data by use of a single key (a primary key ) in fixed-size buckets and uses hashing techniques to enable fast retrieval of the data by key.
S1000D requires information to be created as individual data items, called data modules (DM), which are structured with XML elements and metadata. Each DM is self-contained and may be used wherever that piece of information is needed. They are organised into an hierarchical XML structure through the use of data module coding.
In SQL, the data manipulation language comprises the SQL-data change statements, [3] which modify stored data but not the schema or database objects. Manipulation of persistent database objects, e.g., tables or stored procedures, via the SQL schema statements, [3] rather than the data stored within them, is considered to be part of a separate data definition language (DDL).
The tz database partitions the world into regions where local clocks all show the same time. This map was made by combining version 2023d with OpenStreetMap data, using open source software. [1] This is a list of time zones from release 2025a of the tz database. [2]
It also regroups DM leaders and subject matter experts from Europe, North America, Israel, Japan, China and Australia. The Association for Clinical Data Management (ACDM) is a global organization founded in 1987 to support professionals in the management of clinical data.
Unisys DMS, a Unisys OS 2200 database. Unisys DMSII; Digital Microsystems, Inc., an early microcomputer company; Digital Multiplex System, a telephone exchange system; Dealership management system, for car dealerships; DMS Software Reengineering Toolkit, program transformation tools; DMS-59, a video connector supporting two displays