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Example of QBE query with joins, designed in Borland's Paradox database. Query by Example (QBE) is a database query language for relational databases.It was devised by Moshé M. Zloof at IBM Research during the mid-1970s, in parallel to the development of SQL. [1]
A query language, also known as data query language or database query language (DQL), is a computer language used to make queries in databases and information systems. In database systems, query languages rely on strict theory to retrieve information. [1] A well known example is the Structured Query Language (SQL).
Spring Roo is an open source active code generator for Spring Framework based Java applications. It uses AspectJ mixins to provide separation of concerns during round-trip maintenance. Trackvia is a low-code platform first released in 2007. UiPath is a low-code/no-code development platform for enterprise automation and robotic process ...
Apache Hive is a data warehouse software project. It is built on top of Apache Hadoop for providing data query and analysis. [3] [4] Hive gives an SQL-like interface to query data stored in various databases and file systems that integrate with Hadoop.
Silver Surfer, as it was known during early development, was developed by Laurent Ribardière in 1984. Following negotiations with Ribardiere it was planned that Apple Inc. (formerly Apple Computer Inc) would publish the software but Apple canceled the plan, reportedly due to pressure from other potential database publishers who claimed that if Apple had their own "brand" database, third party ...
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Later editions feature extensive coverage of SQL.] Chamberlin, et al., "A history and evaluation of System R" CACM Vol. 24 No. 10, October 1981. [System R was a widely discussed research system during the late 70s and early 80s, familiar to all computer scientists of the day working on database systems, and implementing the first version of SQL.
Unlike the later ODBC, Blueprint was a purely code-based system, lacking anything approximating a command language like SQL. Instead, programmers used data structures to store the query information, constructing a query by linking many of these structures together. Lotus referred to these compound structures as query trees. [2]