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  2. MySQL Archive - Wikipedia

    en.wikipedia.org/wiki/MySQL_Archive

    In MySQL 5.1, a copy of the MySQL FRM file is stored in the header of each Archive file. The FRM file, which represents the definition of a table, allows an Archive file to be restored to a MySQL server if the Archive file is copied to the server. Despite the use of zlib, archive files are not compatible with gzio, the basis of the gzip tools ...

  3. Comparison of MySQL database engines - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_MySQL...

    This is a comparison between notable database engines for the MySQL database management system (DBMS). A database engine (or "storage engine") is the underlying software component that a DBMS uses to create, read, update and delete (CRUD) data from a database.

  4. Database normalization - Wikipedia

    en.wikipedia.org/wiki/Database_normalization

    In all these cases, however, the database designer does not have to perform 6NF normalization manually by creating separate tables. Some DBMSs that are specialized for warehousing, such as Sybase IQ , use columnar storage by default, but the designer still sees only a single multi-column table.

  5. Aria (storage engine) - Wikipedia

    en.wikipedia.org/wiki/Aria_(storage_engine)

    Aria is a storage engine for the MariaDB and MySQL relational database management systems.Its goal is to make a crash-safe alternative to MyISAM.It is not transactional.. Aria has been in development since 2007 and was first announced by Michael "Monty" Widenius on his blog. [1]

  6. Full table scan - Wikipedia

    en.wikipedia.org/wiki/Full_table_scan

    The cost is predictable, as every time database system needs to scan full table row by row. When table is less than 2 percent of database block buffer, the full scan table is quicker. Cons: Full table scan occurs when there is no index or index is not being used by SQL. And the result of full scan table is usually slower that index table scan.

  7. Hierarchical and recursive queries in SQL - Wikipedia

    en.wikipedia.org/wiki/Hierarchical_and_recursive...

    A common table expression, or CTE, (in SQL) is a temporary named result set, derived from a simple query and defined within the execution scope of a SELECT, INSERT, UPDATE, or DELETE statement. CTEs can be thought of as alternatives to derived tables ( subquery ), views , and inline user-defined functions.

  8. Select (SQL) - Wikipedia

    en.wikipedia.org/wiki/Select_(SQL)

    A SELECT statement retrieves zero or more rows from one or more database tables or database views. In most applications, SELECT is the most commonly used data manipulation language (DML) command. As SQL is a declarative programming language, SELECT queries specify a result set, but do not specify how to calculate it.

  9. HeidiSQL - Wikipedia

    en.wikipedia.org/wiki/HeidiSQL

    View all databases on the server, connect to a single database to work with its tables and data; View connected databases' total and table size in KB/MB/GB within the database/table tree structure; Create new, alter existing databases' name, character set and collation, drop (delete) databases; Tables, views, procedures, triggers and events ...