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A logical data model or logical schema is a data model of a specific problem domain expressed independently of a particular database management product or storage technology (physical data model) but in terms of data structures such as relational tables and columns, object-oriented classes, or XML tags. This is as opposed to a conceptual data ...
Data modeling is a process used to define and analyze data requirements needed to support the business processes within the scope of corresponding information systems in organizations. Therefore, the process of data modeling involves professional data modelers working closely with business stakeholders, as well as potential users of the ...
Overview of a data-modeling context: Data model is based on Data, Data relationship, Data semantic and Data constraint. A data model provides the details of information to be stored, and is of primary use when the final product is the generation of computer software code for an application or the preparation of a functional specification to aid a computer software make-or-buy decision.
References. Star schema. In computing, the star schema or star model is the simplest style of data mart schema and is the approach most widely used to develop data warehouses and dimensional data marts. [ 1 ] The star schema consists of one or more fact tables referencing any number of dimension tables. The star schema is an important special ...
Many-to-many (data model) An Author can write several Books, and a Book can be written by several Authors. The Author-Book many-to-many relationship as a pair of one-to-many relationships with a junction table. In systems analysis, a many-to-many relationship is a type of cardinality that refers to the relationship between two entities, [1] say ...
Data lineage is the process of tracking how data has been passed around and transformed throughout a system. It includes the data origin, what happens to it, and where it moves over time. [ 1 ] Data lineage provides visibility and simplifies tracing errors back to the root cause in a data analytics process. [ 2 ]
Overview. The "Operational View" (OV) in the DoDAF Enterprise architecture framework (version 1/1.5) ('Operational Viewpoint' in DODAF 2) describes the tasks and activities, operational elements, and information exchanges required to conduct operations. A pure Operational View is material independent. However, operations and their relationships ...
Ontology (information science) In information science, an ontology encompasses a representation, formal naming, and definitions of the categories, properties, and relations between the concepts, data, or entities that pertain to one, many, or all domains of discourse. More simply, an ontology is a way of showing the properties of a subject area ...