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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. For example, in the ...
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 ).
Given that metadata is a set of descriptive, structural and administrative data about a group of computer data (for example such as a database schema), Java Metadata Interface (or JMI) is a platform-neutral specification that defines the creation, storage, access, lookup and exchange of metadata in the Java programming language.
The result is a significant reduction in the amount of code that a developer needs to access a relational database using lower level APIs like JDBC and ODBC. Other persistence frameworks such as Hibernate allow the creation of an object model (in Java, say) by the user, and create and maintain the relational database automatically. iBATIS takes ...
To specify schemas and to create, modify, and extract data from the TypeDB database, programmers use the query language TypeQL. The language is noteworthy for its intended resemblance to natural language, following a subject-verb-object statement structure for a fixed set of “key verbs” (see § Examples).
The five level schema architecture includes the following: Local Schema is basically the conceptual model of a component database expressed in a native data model. [3] Component schema is the subset of the local schema that the owner organisation is willing to share with other users of the FDBS and it is translated into a common data model. [3]
HSQLDB (Hyper SQL Database) is a relational database management system written in Java. It has a JDBC driver and supports a large subset of SQL-92, SQL:2008, SQL:2011, and SQL:2016 standards. [2] It offers a fast, [3] small (around 1300 kilobytes in version 2.2) database engine which offers both in-memory and disk-based tables. Both embedded ...
db4o (database for objects) was an embeddable open-source object database for Java and .NET developers. It was developed, commercially licensed and supported by Actian.In October 2014, Actian declined to continue to actively pursue and promote the commercial db4o product offering for new customers.