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  2. SQLSTATE - Wikipedia

    en.wikipedia.org/wiki/SQLSTATE

    In very early versions of the SQL standard the return code was called SQLCODE and used a different coding schema. The following table lists the standard-conforming values - based on SQL:2011 . [ 1 ] The table's last column shows the part of the standard that defines the row.

  3. Database administration - Wikipedia

    en.wikipedia.org/wiki/Database_administration

    One key skill required and often overlooked when selecting a DBA is database recovery (a part of disaster recovery). It is not a case of “if” but a case of “when” a database suffers a failure, ranging from a simple failure to a full catastrophic failure. The failure may be data corruption, media failure, or user induced errors.

  4. Database administrator - Wikipedia

    en.wikipedia.org/wiki/Database_administrator

    A database administrator (DBA) manages computer databases. [1] The role may include capacity planning , installation , configuration , database design , migration , performance monitoring, security , troubleshooting , as well as backup and data recovery .

  5. Denial-of-service attack - Wikipedia

    en.wikipedia.org/wiki/Denial-of-service_attack

    Diagram of a DDoS attack. Note how multiple computers are attacking a single computer. In computing, a denial-of-service attack (DoS attack) is a cyber-attack in which the perpetrator seeks to make a machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a host connected to a network.

  6. Distributed SQL - Wikipedia

    en.wikipedia.org/wiki/Distributed_SQL

    A distributed SQL database is a single relational database which replicates data across multiple servers. Distributed SQL databases are strongly consistent and most support consistency across racks, data centers, and wide area networks including cloud availability zones and cloud geographic zones .

  7. Administrative error - Wikipedia

    en.wikipedia.org/wiki/Administrative_error

    Help; Learn to edit; Community portal; Recent changes; Upload file; Special pages

  8. Failure detector - Wikipedia

    en.wikipedia.org/wiki/Failure_detector

    In a distributed computing system, a failure detector is a computer application or a subsystem that is responsible for the detection of node failures or crashes. [1] Failure detectors were first introduced in 1996 by Chandra and Toueg in their book Unreliable Failure Detectors for Reliable Distributed Systems.

  9. Single point of failure - Wikipedia

    en.wikipedia.org/wiki/Single_point_of_failure

    The concept of a single point of failure has also been applied to fields outside of engineering, computers, and networking, such as corporate supply chain management [6] and transportation management. [7] Design structures that create single points of failure include bottlenecks and series circuits (in contrast to parallel circuits).