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A process control block ( PCB ), also sometimes called a process descriptor, is a data structure used by a computer operating system to store all the information about a process . When a process is created (initialized or installed), the operating system creates a corresponding process control block, which specifies and tracks the process state ...
Cerner CCL. Cerner CCL (Cerner Command Language) is the Cerner Corporation fourth-generation programming language, which is expressed in the Cerner Discern Explorer solution. [ 1] CCL is patterned after the Structured Query Language (SQL). All Cerner Millennium health information technology solutions use CCL/Discern Explorer to select from ...
Database normalization is the process of structuring a relational database in accordance with a series of so-called normal forms in order to reduce data redundancy and improve data integrity. It was first proposed by British computer scientist Edgar F. Codd as part of his relational model . Normalization entails organizing the columns ...
SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Edgar F. Codd [12] in the early 1970s. [13] This version, initially called SEQUEL (Structured English Query Language), was designed to manipulate and retrieve data stored in IBM's original quasirelational database management system, System R, which a group at IBM San ...
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Sharpe's Company (chronological) Sharpe's Assassin (publication) Sharpe's Command is a historical novel in the Richard Sharpe series by Bernard Cornwell, first published in 2023. The story leads up to the Battle of Almaraz, which took place on 18–19 May 1812 in the Peninsular War .
A page table is a data structure used by a virtual memory system in a computer to store mappings between virtual addresses and physical addresses. Virtual addresses are used by the program executed by the accessing process, while physical addresses are used by the hardware, or more specifically, by the random-access memory (RAM) subsystem.
Select (SQL) The SQL SELECT statement returns a result set of rows, from one or more tables. [1] [2] A SELECT statement retrieves zero or more rows from one or more database tables or database views. In most applications, SELECT is the most commonly used data manipulation language (DML) command. As SQL is a declarative programming language ...