When.com Web Search

Search results

  1. Results From The WOW.Com Content Network
  2. Real contracts in Roman law - Wikipedia

    en.wikipedia.org/wiki/Real_contracts_in_Roman_law

    Rates of interest were heavily regulated by the state. As a mutuum did not place on the borrower any specific date on which to return the equivalent thing, this would also be given in a stipulatio if required. In the later law, the stipulatio replaced mutuum completely. [5] The borrower was bound to return the equivalent thing.

  3. Conjunctive query - Wikipedia

    en.wikipedia.org/wiki/Conjunctive_Query

    Conjunctive queries without distinguished variables are called boolean conjunctive queries.Conjunctive queries where all variables are distinguished (and no variables are bound) are called equi-join queries, [1] because they are the equivalent, in the relational calculus, of the equi-join queries in the relational algebra (when selecting all columns of the result).

  4. Comparison of data modeling tools - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_data...

    Update database and/or update model Multi-user collaboration using File, DBMS or (transfer via XMI, CVS/TFS or Difference Merge). MySQL Workbench: Physical IDEF1X, IE (Crow’s feet), UML, and more Yes Yes Update database and/or update model No Navicat Data Modeler Conceptual, Logical & Physical IE (Crow’s foot) Yes Yes

  5. Relation (database) - Wikipedia

    en.wikipedia.org/wiki/Relation_(database)

    In database theory, a relation, as originally defined by E. F. Codd, [1] is a set of tuples (d 1,d 2,...,d n), where each element d j is a member of D j, a data domain. Codd's original definition notwithstanding, and contrary to the usual definition in mathematics, there is no ordering to the elements of the tuples of a relation.

  6. Comparison of database administration tools - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_database...

    Yes - user manager with support for database and schema permissions as well as for individual object (table, view, functions) permissions; Some - simple user manager with support for database and schema permissions; No - no user manager, or read-only user manager

  7. Comparison of relational database management systems - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_relational...

    However, its definition varies between different database vendors. Note (2): In Derby, H2, LucidDB, and CUBRID, users code functions and procedures in Java. Note (3): ENUM datatype exists. CHECK clause is parsed, but not enforced in runtime. Note (5): Informix supports external functions written in Java, C, & C++.

  8. Database transaction - Wikipedia

    en.wikipedia.org/wiki/Database_transaction

    A database transaction symbolizes a unit of work, performed within a database management system (or similar system) against a database, that is treated in a coherent and reliable way independent of other transactions. A transaction generally represents any change in a database. Transactions in a database environment have two main purposes:

  9. Record linkage - Wikipedia

    en.wikipedia.org/wiki/Record_linkage

    Record linkage (also known as data matching, data linkage, entity resolution, and many other terms) is the task of finding records in a data set that refer to the same entity across different data sources (e.g., data files, books, websites, and databases).