Syntax refers to the spelling and grammar of a programming language. Computers are inflexible machines that understand what you type only if you type it in the exact form that the computer expects. The expected form is called the syntax.
Each program defines its own syntactical rules that control which words the computer understands, which combinations of words are meaningful, and what punctuation is necessary to be a correctly structured document.
Levels of Syntax
The three levels of syntax include the following:
Lexical syntax: All the basic symbols of the language (i.e. names, values, operators).
Concrete syntax: The rules for writing expressions, statements and programs.
Abstract syntax: The internal representation of the program specified by a simpler grammar than the concrete syntax.
- synthetic backup
A synthetic backup is identical to a regular full backup in terms of data, but it is created when data is collected from a previous, older full backup and assembled with subsequent incremental backups. The incremental backup will consist only of changed information. A synthetic backup would be used when time or system requirements do […]
Pronounced siss-op, short for system operator, an individual who manages a bulletin board system (BBS) , online service , or special interest group (SIG).
(1)A group of interdependent items that interact regularly to perform a task. (2)An established or organized procedure; a method. (3) A computer system refers to the hardware and softwarecomponents that run a computer or computers. (4) An information systemis a system that collects and stores data. (5) On Macintoshes, System is short for System file, […]
- System Administrator
An individual responsible for maintaining a multi-user computer system, including a local-area network (LAN). Typical duties include: Adding and configuring new workstations Setting up user accounts Installing system-wide software Performing procedures to prevent the spread of viruses Allocating mass storage space The system administrator is sometimes called the sysadmin or the systems administrator. Small organizations […]
- system bus
The bus that connects the CPU to main memory on the motherboard. I/O buses, which connect the CPU with the systems other components, branch off of the system bus. The system bus is also called the frontside bus, memory bus, local bus, or host bus.