|
A
B C
D E
F G
H I
J K
L M
N O
P Q
R S
T U
V W
X Y
Z
I/O
- Input/Output; the physical process through which data
is read from or written to a computer.
ID
- a 4-byte integer that is most often sequentially-ascending
and which starts at 1, except when the Search Item (SI)
is a 4-byte integer.
ill-behaved row ID
- unique record designations in a database table or set
of data that are not neatly sequential; for example, the
first record is identified as row ID 37, the second record
in the series is row ID 43, the third record is numbered
11, and so on. See record number, row ID, and well-behaved
row IDs.
index
- a list of key words or data items with associated pointers
used to locate specific rows or records in a table of a
database, facilitating fast access to data. See inverted,
B-tree, and bitmap index.
indexing
- a method of creating file structures that have pointers
into a database, facilitating directed access to rows or
records in a table.
indexing discrepancy
- when the data in an indexed column is not indexed correctly
in its OMNIDEX index. For example, if a native row is deleted,
but the keywords indexed for it are not, and indexing discrepancy
is said to exist.
indexing option
- an option installed on an OMNIDEX index that customizes
how that index's key values (keys) are indexed. For example,
the Soundex option causes keywords to be indexed for Soundex
(phonetic) retrieval.
index-only mode
- term applied to high-performance retrievals and updates
that affect the key value only. Discrete mode ASK Index
retrievals return only the key values stored in the index
sets without returning a record.
inner joins
- A join that retrieves rows from multiple tables by matching
rows with common values in each table. Rows with no matching
records in the joined tables are excluded.
instance
- identifies a unique connection by a user to an environment
catalog.
internal ID list
- the most current list of record identifiers qualified
by an ODXFIND.
intrinsics
- on an HP3000, the subroutines used to perform database
functions, including the OMNIDEX, ODXFIND, and ODXGET retrieval
functions.
inverted
- a style of indexing that uses a storage method opposite
of that used in storing the data. To store data, a file
starts with a record identifier, then associates data with
it. Inverted indexing starts with a unique piece of data
and associates record identifiers of records that contain
the unique piece.
inverted list index
- a file structure that stores the pointers to a database
as data, and the data from the database as keys.
ISAM
- Indexed Sequential Access Method; a type of database indexing
through which data is retrieved by incrementally successive
rows.
item list
- the items passed through the list parameter.
Top
|
