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  2. Null (SQL) - Wikipedia

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

    An example of this behavior is given in the section analyzing the missing-value semantics of Nulls. The SQL COALESCE function or CASE expressions can be used to "simulate" Null equality in join criteria, and the IS NULL and IS NOT NULL predicates can be used in the join criteria as well. The following predicate tests for equality of the values ...

  3. Is functions - Wikipedia

    en.wikipedia.org/wiki/Is_functions

    Similarly the type checking functions return a Boolean recording whether the argument expression is of a particular type. In Transact-SQL, the functions return zero or one rather than Boolean values True and False. IsArray(name) This function determines whether the variable name passed as its argument is an array.

  4. Attribute-based access control - Wikipedia

    en.wikipedia.org/wiki/Attribute-based_access_control

    Attribute-based access control (ABAC), also known as policy-based access control for IAM, defines an access control paradigm whereby a subject's authorization to perform a set of operations is determined by evaluating attributes associated with the subject, object, requested operations, and, in some cases, environment attributes.

  5. XACML - Wikipedia

    en.wikipedia.org/wiki/XACML

    The eXtensible Access Control Markup Language (XACML) is an XML-based standard markup language for specifying access control policies. The standard, published by OASIS, defines a declarative fine-grained, attribute-based access control policy language, an architecture, and a processing model describing how to evaluate access requests according to the rules defined in policies.

  6. Access control - Wikipedia

    en.wikipedia.org/wiki/Access_control

    Common physical security access control with a finger print A sailor checks an identification card (ID) before allowing a vehicle to enter a military installation.. In physical security and information security, access control (AC) is the selective restriction of access to a place or other resource, while access management describes the process.

  7. Computer access control - Wikipedia

    en.wikipedia.org/wiki/Computer_access_control

    In computer security, general access control includes identification, authorization, authentication, access approval, and audit.A more narrow definition of access control would cover only access approval, whereby the system makes a decision to grant or reject an access request from an already authenticated subject, based on what the subject is authorized to access.

  8. Woman Missing After Not Getting on Connecting Flight Sent ...

    www.aol.com/lifestyle/woman-missing-not-getting...

    Hannah Kobayashi, from Hawaii, has been missing since she landed in Los Angeles on Friday, Nov. 8. A Hawaii woman who has been missing since she failed to board a connecting flight in Los Angeles ...

  9. Access-control list - Wikipedia

    en.wikipedia.org/wiki/Access-control_list

    In computer security, an access-control list (ACL) is a list of permissions [a] associated with a system resource (object or facility). An ACL specifies which users or system processes are granted access to resources, as well as what operations are allowed on given resources. [1] Each entry in a typical ACL specifies a subject and an operation.