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  2. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    Gary Kessler's list of file signatures; Online File Signature Database for Forensic Practitioners, a private compilation free to Law Enforcement; Man page for compress, uncompress, and zcat on SCO Open Server; Public Database of File Signatures [dead link ‍] Complete list of magic numbers with sample files

  3. Snowflake schema - Wikipedia

    en.wikipedia.org/wiki/Snowflake_schema

    The snowflake schema is in the same family as the star schema logical model. In fact, the star schema is considered a special case of the snowflake schema. The snowflake schema provides some advantages over the star schema in certain situations, including: Some OLAP multidimensional database modeling tools are optimized for snowflake schemas. [3]

  4. List of filename extensions (A–E) - Wikipedia

    en.wikipedia.org/wiki/List_of_filename_extensions...

    Directory containing configuration files (informal standard) Unix DAA: Direct Access Archive: DAE: COLLADA file DAF: Data file Digital Anchor DART: Dart (programming language) source file DAT: AMPL data file AMPL: DAT: LDraw (Sub)Part File, 3D Model LDraw: DAT: Data RSNetWorx Project DAT: Data file in special format or ASCII: DAT: Database file ...

  5. Star schema - Wikipedia

    en.wikipedia.org/wiki/Star_schema

    Consider a database of sales, perhaps from a store chain, classified by date, store and product. The image of the schema to the right is a star schema version of the sample schema provided in the snowflake schema article. Fact_Sales is the fact table and there are three dimension tables Dim_Date, Dim_Store and Dim_Product.

  6. Partition (database) - Wikipedia

    en.wikipedia.org/wiki/Partition_(database)

    Database partitioning refers to intentionally breaking a large database into smaller ones for scalability purposes, distinct from network partitions which are a type of network fault between nodes [1]. In a partitioned database, each piece of data belongs to exactly one partition, effectively making each partition a small database of its own [1].

  7. Shard (database architecture) - Wikipedia

    en.wikipedia.org/wiki/Shard_(database_architecture)

    Horizontal partitioning splits one or more tables by row, usually within a single instance of a schema and a database server. It may offer an advantage by reducing index size (and thus search effort) provided that there is some obvious, robust, implicit way to identify in which partition a particular row will be found, without first needing to search the index, e.g., the classic example of the ...

  8. List of file formats - Wikipedia

    en.wikipedia.org/wiki/List_of_file_formats

    waIndx – Wakanda (software) database Index file; waModel – Wakanda (software) database Model file; waJournal – Wakanda (software) database Journal file; WDB – Microsoft Works Database; WMDB – Windows Media Database file – The CurrentDatabase_360.wmdb file can contain file name, file properties, music, video, photo and playlist ...

  9. MyISAM - Wikipedia

    en.wikipedia.org/wiki/MyISAM

    The files have names that begin with the table name and have an extension to indicate the file type. MySQL uses a .frm file to store the definition of the table, but this file is not a part of the MyISAM engine; instead it is a part of the server. The data file has a .MYD (MYData) extension. The index file has a .MYI (MYIndex) extension.