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  2. Query string - Wikipedia

    en.wikipedia.org/wiki/Query_string

    A query string is a part of a uniform resource locator that assigns values to specified parameters.A query string commonly includes fields added to a base URL by a Web browser or other client application, for example as part of an HTML document, choosing the appearance of a page, or jumping to positions in multimedia content.

  3. Empty string - Wikipedia

    en.wikipedia.org/wiki/Empty_string

    The empty string should not be confused with the empty language ∅, which is a formal language (i.e. a set of strings) that contains no strings, not even the empty string. The empty string has several properties: |ε| = 0. Its string length is zero. ε ⋅ s = s ⋅ ε = s. The empty string is the identity element of the concatenation operation

  4. Comma-separated values - Wikipedia

    en.wikipedia.org/wiki/Comma-separated_values

    Comma-separated values (CSV) is a text file format that uses commas to separate values, and newlines to separate records. A CSV file stores tabular data (numbers and text) in plain text, where each line of the file typically represents one data record. Each record consists of the same number of fields, and these are separated by commas in the ...

  5. String operations - Wikipedia

    en.wikipedia.org/wiki/String_operations

    A string substitution or simply a substitution is a mapping f that maps characters in Σ to languages (possibly in a different alphabet). Thus, for example, given a character a ∈ Σ, one has f(a)=L a where L a ⊆ Δ * is some language whose alphabet is Δ. This mapping may be extended to strings as f(ε)=ε. for the empty string ε, and f(sa ...

  6. Existential quantification - Wikipedia

    en.wikipedia.org/wiki/Existential_quantification

    For some natural number , =. This is a single statement using existential quantification. It is roughly analogous to the informal sentence "Either 0 × 0 = 25 {\displaystyle 0\times 0=25} , or 1 × 1 = 25 {\displaystyle 1\times 1=25} , or 2 × 2 = 25 {\displaystyle 2\times 2=25} , or... and so on," but more precise, because it doesn't need us ...

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    mail.aol.com

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  8. Truth value - Wikipedia

    en.wikipedia.org/wiki/Truth_value

    In realizability truth values are sets of programs, which can be understood as computational evidence of validity of a formula. For example, the truth value of the statement "for every number there is a prime larger than it" is the set of all programs that take as input a number , and output a prime larger than .

  9. Business intelligence - Wikipedia

    en.wikipedia.org/wiki/Business_intelligence

    Business intelligence (BI) consists of strategies, methodologies, and technologies used by enterprises for data analysis and management of business information. [1] Common functions of BI technologies include reporting, online analytical processing, analytics, dashboard development, data mining, process mining, complex event processing, business performance management, benchmarking, text ...