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  2. Oracle machine - Wikipedia

    en.wikipedia.org/wiki/Oracle_machine

    an oracle tape, which is a semi-infinite tape separate from the work tape. The alphabet for the oracle tape may be different from the alphabet for the work tape. an oracle head which, like the read/write head, can move left or right along the oracle tape reading and writing symbols; two special states: the ASK state and the RESPONSE state.

  3. Object–relational mapping - Wikipedia

    en.wikipedia.org/wiki/Object–relational_mapping

    For example, consider an address book entry that represents a single person along with zero or more phone numbers and zero or more addresses. This could be modeled in an object-oriented implementation by a "Person object " with an attribute/field to hold each data item that the entry comprises: the person's name, a list of phone numbers, and a ...

  4. Entity–relationship model - Wikipedia

    en.wikipedia.org/wiki/Entity–relationship_model

    A person plays the role of husband in a marriage (relationship) and another person plays the role of wife in the (same) marriage. These words are nouns. Chen's terminology has also been applied to earlier ideas. The lines, arrows, and crow's feet of some diagrams owes more to the earlier Bachman diagrams than to Chen's relationship diagrams.

  5. String diagram - Wikipedia

    en.wikipedia.org/wiki/String_diagram

    each box : is a string diagram, for each list of wires x {\displaystyle x} , the identity id ( x ) : x → x {\displaystyle {\text{id}}(x):x\to x} is a string diagram representing the process which does nothing to its input system, it is drawn as a bunch of parallel wires,

  6. Comparison of programming languages (string functions)

    en.wikipedia.org/wiki/Comparison_of_programming...

    <string>.rpartition(separator) Searches for the separator from right-to-left within the string then returns the sub-string before the separator; the separator; then the sub-string after the separator. Description Splits the given string by the right-most separator and returns the three substrings that together make the original.

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  8. Random oracle - Wikipedia

    en.wikipedia.org/wiki/Random_oracle

    Oracle cloning is the re-use of the once-constructed random oracle within the same proof (this in practice corresponds to the multiple uses of the same cryptographic hash within one algorithm for different purposes). [7] Oracle cloning with improper domain separation breaks security proofs and can lead to successful attacks. [8]

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