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name server In an nCUBE 2 system, the name server provides a global repository of string information accessible from any nCUBE node. Client processes obtain information about services and process IDs from the name server.

named object A user-accessible entity, uniquely identified by name, that contains data. Access to a named object implies the potential ability to read, write, or execute its contents. For example, named object could be a table.

named parameter A type of PL/SQL parameter. You can use named parameters in any order.

Named Pipes A feature of the OS/2 LAN Manager that provides an API to establish local or remote process-to-process communication.

naming model In Oracle Names, the set and structure of domains within which names can be allocated. The highest level is called the root domain, and all others are hierarchically related.

narrower term A term that represents a more focused definition of another term. A thesaurus operator that allows the tracking of narrower terms. Using broader term and narrower term operators, a thesaurus can establish a definition hierarchy. See also broader term.

navigable A SQL*Forms item is considered navigable if the operator can reach it via the keyboard.

navigation Refers to the shifting of keyboard focus from one view to another.

navigational trigger A trigger classification used in versions of SQL*Forms before Version 3.0.

Navigator The component of an Interchange that chooses the best possible path in a TNS network. In order to navigate, the Navigator refers to the file TNSNET.ORA.

NCP Stands for Network Control Program, IBM software that runs in the front-end processor and works with VTAM to link a host computer and terminal controllers.

negotiation A communication between two parties in which they agree upon how they will communicate. In a TNS connection, a negotiation occurs between the initiator and the destination, and at every intermediate hop.

nested condition A condition used within a condition, such as CREDIT_LIMIT = 8000 AND STATE = 'NY' or 'CA'. In this statement, STATE = 'CA' OR 'NY' is a condition nested within the overall AND condition. See also condition, operator, and top-level operator.

nested matrix Matrix report in which either the across and/or down dimensions contain a master/detail relationship. There is no limit to the amount of nesting allowed.

nesting In programming or writing SQL statements, the placement of a structure within a like structure, as in placing a query within another query. In SQL, a nested query refers to one query that includes another. In SQL*Forms, triggers can be nested.

NetBIOS Stands for Network Basic Input/Output System, a process-to-process communications protocol designed to provide virtual links between machines on a network.

NETGEN An AOS/VS utility used to generate and manage the system network configuration.

NetWare A network operating system produced by Novell. NetWare is hardware-independent, and consists of:
1) a file server operating system
2) file and print sharing services
3) client shell software.
The file service software usually resides on a dedicated PC, while the NetWare shell and protocol interface reside on the client workstations as well as the file server. NetWare supports several different NICs and topologies transparently.

NetWare shell Two small programs that run on every NetWare client. One intercepts commands intended for NetWare and the other sends the commands from the NetWare client to the NetWare file server.

network A group of two or more computers linked through hardware and software to allow the sharing of data and/or peripherals.

network administrator The person who performs network management tasks such as designing, installing, and testing network tools. The administrator probably maintains the Interchange configuration files, TNS connect descriptors and service names, and PUBLIC database links and synonyms.

network character set As defined by Oracle, the set of characters acceptable for use as values in keyword-value pairs (that is, in connect descriptors and configuration files). The set includes alphanumeric upper and lower case, and some special characters.

network file server See file server.

network listener A listener on a server that listens for connection requests for one or more databases on one or more protocols.

Network Master machine In ORACLE on IBM's VM operating system, the ORACLE Master Control virtual machine that allocates and controls the VM/CMS server in a remote connection.

network objects The types of network names stored in an Oracle Names server. These include database service names, shared database links, and aliases.

network operating system (NOS) Software that manages the resources of a network. An example is Novell's NetWare.

network prefix An alphanumeric string that specifies a network protocol. For example, T stands for TCP/IP and A stands for Async. Also called net_prefix.

network protocol Any industry standard transport protocol, such as TCP/IP or APPC.

NFS(Network File System) Network file access and transfer software developed by Sun Microsystems, Inc.

NIC Stands for network interface card.

node (1) A computer or terminal that is part of a TNS network and identified by a node name. Often, a PC connected to a LAN at which a user can execute programs and access shared disk storage and resources such as printers. (2) In a database table with tree-structured data (data with an implied hierarchy), a node may be a primitive or composite type. A row is sometimes called a node. (3) Occasionally used to represent a particular instance of a function on a function hierarchy diagram. (4) An nCUBE 2 node is a 64-bit VLSI chip consisting of a CPU, an IEEE floating-point unit, a message routing unit, a memory management unit, and up to 64 megabytes of memory. The nCUBE 2 supercomputer includes both processing nodes (array nodes) and I/O nodes.

non-enterable field A field that is not used for the input of new data, or the amendment/deletion of existing data. It may, however, be used to initiate a query and, in some cases, can be used to scroll through the results of the query, where the space allowed on the screen is insufficient to display all the information in one frame.

non-equal relationship A relationship condition that specifies any relationship other than equality. See also relationship, equal relationship, and self-relationship.

non-equi-join A join condition that specifies any relationship other than equality. The relational term for this type of join is a theta join.

non-preferred term The synonym or quasi-synonym of a preferred term. A non-preferred term is not assigned to documents, but is provided as an entry point in a thesaurus or alphabetical index; the user being directed by an instruction (e.g. USE or SEE) to the appropriate preferred term. Sometimes known as a non-descriptor.

non-query record group A record group that does not currently have a query associated with it. A non-query record group can only be created programmatically.

non-shared code ORACLE program code that cannot be shared among multiple database users.

non-shared code system An ORACLE installation that does not install a DCSS containing ORACLE code. Instead, the ORACLE code is loaded by every virtual machine using ORACLE. The decision to use non-shared code is made at installation time.

non-value construct A PL/SQL code structure that does not return a value. Non-value constructs include procedures and anonymous procedures.

normal mode When SQL*Forms (Runform) is not in Enter Query mode or any other special mode, it is in normal mode.

normalization A step-by-step process that produces either entity or table definitions that have: no repeating groups, the same kind of values assigned to attributes or columns, a distinct name, distinct and uniquely identifiable rows.

null The absence of a value for a given item. A null implies nothing more than "a value is not applicable" or "the value is unknown." Nulls are not equal to any other value, even to each other. Comparisons with nulls are always false. In SQL*Forms, a null character field is not equal to a blank or a value zero characters long, nor is a null numeric field equal to a zero. To prohibit null values, define a column as NOT NULL.

NULL Empty; describes an item, object, variable, etc. that has no value. Note that a NULL character text item is not the same as a blank text item or a text item whose value is zero characters long; similarly, a NULL numerical text item is not the same as a numerical text item whose value is zero.

NULL value The absence of a value.

NUMBER datatype A standard ORACLE datatype. A NUMBER column can contain a number, with or without a decimal point and a sign, and can have from 1 to 105 decimal digits (only 38 digits are significant).

numeric field In SQL*Forms, a field whose value must be a number.

numerics Numbers 0-9, represented as text strings, unless specified otherwise.

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