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  2. NoSQL - Wikipedia

    en.wikipedia.org/wiki/NoSQL

    NoSQL. NoSQL (originally referring to "non- SQL " or "non-relational") [1] is an approach to database design that focuses on providing a mechanism for storage and retrieval of data that is modeled in means other than the tabular relations used in relational databases. Instead of the typical tabular structure of a relational database, NoSQL ...

  3. Apache HBase - Wikipedia

    en.wikipedia.org/wiki/Apache_HBase

    Apache HBase. HBase is an open-source non-relational distributed database modeled after Google's Bigtable and written in Java. It is developed as part of Apache Software Foundation 's Apache Hadoop project and runs on top of HDFS (Hadoop Distributed File System) or Alluxio, providing Bigtable-like capabilities for Hadoop.

  4. Relational database - Wikipedia

    en.wikipedia.org/wiki/Relational_database

    A relational database ( RDB [1]) is a database based on the relational model of data, as proposed by E. F. Codd in 1970. [2] A database management system used to maintain relational databases is a relational database management system ( RDBMS ). Many relational database systems are equipped with the option of using SQL (Structured Query ...

  5. Database - Wikipedia

    en.wikipedia.org/wiki/Database

    Relational databases became dominant in the 1980s. These model data as rows and columns in a series of tables, and the vast majority use SQL for writing and querying data. In the 2000s, non-relational databases became popular, collectively referred to as NoSQL, because they use different query languages.

  6. Unnormalized form - Wikipedia

    en.wikipedia.org/wiki/Unnormalized_form

    Unnormalized form. In database normalization, unnormalized form ( UNF or 0NF ), also known as an unnormalized relation or non-first normal form (N1NF or NF 2 ), [1] is a database data model (organization of data in a database) which does not meet any of the conditions of database normalization defined by the relational model.

  7. ADABAS - Wikipedia

    en.wikipedia.org/wiki/ADABAS

    Adabas, a contraction of “adaptable database system," [1] [2] is a database package that was developed by Software AG to run on IBM mainframes. It was launched in 1971 as a non-relational [3] database. As of 2019, Adabas is marketed [4] for use on a wider range of platforms, including Linux, Unix, and Windows. [5]

  8. SQLite - Wikipedia

    en.wikipedia.org/wiki/SQLite

    Website. www .sqlite .org /fileformat2 .html. SQLite ( / ˌɛsˌkjuːˌɛlˈaɪt /, [4] [5] / ˈsiːkwəˌlaɪt / [6]) is a database engine written in the C programming language. It is not a standalone app; rather, it is a library that software developers embed in their apps. As such, it belongs to the family of embedded databases.

  9. Strozzi NoSQL - Wikipedia

    en.wikipedia.org/wiki/Strozzi_NoSQL

    NoSQL, with development led by Carlo Strozzi, is the latest and perhaps the most active in a line of implementations of the stream-operator database design originally described by Evan Shaffer, Rod Manis, and Robert Jorgensen in a 1991 Unix Review article and an associated paper. Other implementations include the Perl-based RDB, a commercial ...

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