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The University of Plano was an American private liberal arts college located in Plano, Texas that was in operation from 1964 until 1977. The University of Plano received its charter from the State of Texas on May 8, 1964 as a private, coeducational, nondenominational institution.
The database schema is the structure of a database described in a formal language supported typically by a relational database management system (RDBMS). The term " schema " refers to the organization of data as a blueprint of how the database is constructed (divided into database tables in the case of relational databases ).
The terms schema matching and mapping are often used interchangeably for a database process. For this article, we differentiate the two as follows: schema matching is the process of identifying that two objects are semantically related (scope of this article) while mapping refers to the transformations between the objects.
CampusTours Inc. is a software services vendor and online directory with headquarters in Auburn, Maine, that is primarily known as a developer of virtual tours and interactive maps, and as the proprietor of CampusTours.com, a source for virtual college tours, and CampusMaps.com a source for campus maps.
The problem is not limited to the modification of the schema. It, in fact, affects the data stored under the given schema and the queries (and thus the applications) posed on that schema. A database design is sometimes created as a "as of now" instance and thus schema evolution is not considered.
The logical schema was the way data were represented to conform to the constraints of a particular approach to database management. At that time the choices were hierarchical and network. Describing the logical schema, however, still did not describe how physically data would be stored on disk drives. That is the domain of the physical schema.
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Schema-agnosticism is the property of a database of mapping a query issued with the user terminology and structure, automatically mapping it to the dataset vocabulary. The increase in the size and in the semantic heterogeneity of database schemas bring new requirements for users querying and searching structured data .