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  2. SQL-Ledger - Wikipedia

    en.wikipedia.org/wiki/SQL-Ledger

    SQL-Ledger is an ERP and double entry accounting system. Accounting data is stored in an SQL database server and a standard web browser can be used as its user interface.The system uses the Perl language with a database interface module for processing and PostgreSQL for data storage which is the preferred platform.

  3. AME Accounting Software - Wikipedia

    en.wikipedia.org/wiki/AME_Accounting_Software

    AME Accounting Software is a business accounting software application developed by AME Software Products, Inc. AME Accounting Software includes Payroll, General Ledger, Accounts Receivable, Accounts Payable, 1099 Vendor Management, MICR check printing, and Direct Deposit. The software is mostly used by small and medium-size businesses, as well ...

  4. Tuple relational calculus - Wikipedia

    en.wikipedia.org/wiki/Tuple_relational_calculus

    Tuple calculus is a calculus that was created and introduced by Edgar F. Codd as part of the relational model, in order to provide a declarative database-query language for data manipulation in this data model.

  5. SQLite - Wikipedia

    en.wikipedia.org/wiki/SQLite

    SQLite (/ ˌ ɛ s ˌ k juː ˌ ɛ l ˈ aɪ t /, [4] [5] / ˈ s iː k w ə ˌ l aɪ t / [6]) is a free and open-source relational database engine written in the C programming language.It is not a standalone app; rather, it is a library that software developers embed in their apps.

  6. Relational algebra - Wikipedia

    en.wikipedia.org/wiki/Relational_algebra

    Bmg is an implementation of relational algebra in Ruby which closely follows the principles of Tutorial D and The Third Manifesto. [ 11 ] Even the query language of SQL is loosely based on a relational algebra, though the operands in SQL ( tables ) are not exactly relations and several useful theorems about the relational algebra do not hold in ...

  7. Spreadsheet - Wikipedia

    en.wikipedia.org/wiki/Spreadsheet

    [1] [2] [3] Spreadsheets were developed as computerized analogs of paper accounting worksheets. [4] The program operates on data entered in cells of a table. Each cell may contain either numeric or text data, or the results of formulas that automatically calculate and display a value based on the contents of other cells.

  8. COBOL - Wikipedia

    en.wikipedia.org/wiki/COBOL

    COBOL (/ ˈ k oʊ b ɒ l,-b ɔː l /; an acronym for "common business-oriented language") is a compiled English-like computer programming language designed for business use. It is an imperative, procedural, and, since 2002, object-oriented language.

  9. Calculator input methods - Wikipedia

    en.wikipedia.org/wiki/Calculator_input_methods

    On a single-step or immediate-execution calculator, the user presses a key for each operation, calculating all the intermediate results, before the final value is shown. [1] [2] [3] On an expression or formula calculator, one types in an expression and then presses a key, such as "=" or "Enter", to evaluate the expression.