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  2. Terminal and nonterminal symbols - Wikipedia

    en.wikipedia.org/wiki/Terminal_and_nonterminal...

    Applying the rules recursively to a source string of symbols will usually terminate in a final output string consisting only of terminal symbols. Consider a grammar defined by two rules. In this grammar, the symbol Б is a terminal symbol and Ψ is both a non-terminal symbol and the start symbol. The production rules for creating strings are as ...

  3. Metasyntax - Wikipedia

    en.wikipedia.org/wiki/Metasyntax

    Metalanguages have their own metasyntax each composed of terminal symbols, nonterminal symbols, and metasymbols. A terminal symbol, such as a word or a token, is a stand-alone structure in a language being defined. A nonterminal symbol represents a syntactic category, which defines one or more valid phrasal or sentence structure consisted of an ...

  4. Extended Backus–Naur form - Wikipedia

    en.wikipedia.org/wiki/Extended_Backus–Naur_form

    An EBNF consists of terminal symbols and non-terminal production rules which are the restrictions governing how terminal symbols can be combined into a valid sequence. Examples of terminal symbols include alphanumeric characters, punctuation marks, and whitespace characters.

  5. Noncontracting grammar - Wikipedia

    en.wikipedia.org/wiki/Noncontracting_grammar

    A context-sensitive grammar is a noncontracting grammar in which all rules are of the form αAβ → αγβ, where A is a nonterminal, and γ is a nonempty string of nonterminal and/or terminal symbols. However, some authors use the term context-sensitive grammar to refer to noncontracting grammars in general. [1]

  6. Context-free grammar - Wikipedia

    en.wikipedia.org/wiki/Context-free_grammar

    The language generated by a grammar is the set of all strings of terminal symbols that can be derived, by repeated rule applications, from some particular nonterminal symbol ("start symbol"). Nonterminal symbols are used during the derivation process, but do not appear in its final result string.

  7. Toad (software) - Wikipedia

    en.wikipedia.org/wiki/Toad_(software)

    Toad is a database management toolset from Quest Software for managing relational and non-relational databases using SQL aimed at database developers, database administrators, and data analysts. The Toad toolset runs against Oracle, SQL Server, IBM DB2 (LUW & z/OS), SAP and MySQL. A Toad product for data preparation supports many data platforms.

  8. DBM (computing) - Wikipedia

    en.wikipedia.org/wiki/DBM_(computing)

    The name is a three-letter acronym for DataBase Manager, and can also refer to the family of database engines with APIs and features derived from the original dbm. The dbm library stores arbitrary data by use of a single key (a primary key ) in fixed-size buckets and uses hashing techniques to enable fast retrieval of the data by key.

  9. Talk:Terminal and nonterminal symbols - Wikipedia

    en.wikipedia.org/wiki/Talk:Terminal_and_non...

    Terminal and non-terminal functions only corresponds to this article (Terminal and non-terminal symbols) in the case of a context-free language, and perhaps not even then. — Arthur Rubin 15:31, 11 August 2014 (UTC)