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Laura M. Haas is an American computer scientist noted for her research in database systems and information integration.She is best known for creating systems and tools for the integration of heterogeneous data from diverse sources, including federated technology that virtualizes access to data, and mapping technology that enables non-programmers to specify how data should be integrated.
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 ).
Ramez A. Elmasri (20 October 1950 – 14 May 2022) [1] was an Egyptian-American computer scientist and a noted researcher in the field of database systems. He was also professor and associate chairman in the department of Computer Science and Engineering at The University of Texas at Arlington, Arlington, Texas.
Ganymede has an elaborate XML data format which can be used to import and export the server's object database schema and object data. Importing XML will typically result in the creation, modification, or deletion of database objects, and will trigger one or more network directory service rebuilds just as using the GUI client would do.
The data model of TypeDB is based on primitives from conceptual data modeling, which are implemented in a type system (see § Data and query model).The type system can be extended with user-defined types, type dependencies, and subtyping, which together act as a database schema.
An XML database is a data persistence software system that allows data to be specified, and stored, in XML format. This data can be queried , transformed, exported and returned to a calling system. XML databases are a flavor of document-oriented databases which are in turn a category of NoSQL database.
Since the existing schema is not touched, this gives the benefit of being able to evolve the database in a highly iterative manner and without causing any downtime. Changes in the content of information is done by emulating similar features of a temporal database in a relational database. In anchor modeling, pieces of information can be tied to ...
In computer science, schema versioning and schema evolution, deal with the need to retain current data and software system functionality in the face of changing database structure. [1] The problem is not limited to the modification of the schema.