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  2. Database normalization - Wikipedia

    en.wikipedia.org/wiki/Database_normalization

    Database normalization. Database normalization is the process of structuring a relational database in accordance with a series of so-called normal forms in order to reduce data redundancy and improve data integrity. It was first proposed by British computer scientist Edgar F. Codd as part of his relational model .

  3. Transaction log - Wikipedia

    en.wikipedia.org/wiki/Transaction_log

    Transaction log. In the field of databases in computer science, a transaction log (also transaction journal, database log, binary log or audit trail) is a history of actions executed by a database management system used to guarantee ACID properties over crashes or hardware failures. Physically, a log is a file listing changes to the database ...

  4. 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 ...

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    mail.aol.com

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  6. Log-structured file system - Wikipedia

    en.wikipedia.org/wiki/Log-structured_file_system

    Log-structured file system. A log-structured filesystem is a file system in which data and metadata are written sequentially to a circular buffer, called a log. The design was first proposed in 1988 by John K. Ousterhout and Fred Douglis and first implemented in 1992 by Ousterhout and Mendel Rosenblum for the Unix-like Sprite distributed ...

  7. Logging (computing) - Wikipedia

    en.wikipedia.org/wiki/Logging_(computing)

    Logging (computing) In computing, logging is the act of keeping a log of events that occur in a computer system, such as problems, errors or just information on current operations. These events may occur in the operating system or in other software. A message or log entry is recorded for each such event.

  8. Sixth normal form - Wikipedia

    en.wikipedia.org/wiki/Sixth_normal_form

    Sixth normal form ( 6NF) is a normal form used in relational database normalization which extends the relational algebra and generalizes relational operators (such as join) to support interval data, which can be useful in temporal databases . The term 6NF has historically also been used to refer to another normalization degree, which today is ...

  9. Database model - Wikipedia

    en.wikipedia.org/wiki/Database_model

    Database model. A database model is a type of data model that determines the logical structure of a database. It fundamentally determines in which manner data can be stored, organized and manipulated. The most popular example of a database model is the relational model, which uses a table-based format.