Хорошев / ИЛП_материал_маг_02.15 / Спецификация AECMA Specification 2000M / MIL-STD-1388-2B

MIL-STD-1388-2B

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APPENDIX E

APPENDIX E

DATA ELEMENT DICTIONARY

10 PURPOSE. This appendix provides

Logistic Support Analysis (LSA) Record (LSAR) and information for interpreting and using it. The dictionary contains all the data elements and names that appear on the LSAR data relationship tables.

20 SECTIONS. The dictionary is divided into three sections.

20.1 Section 1: Index of data element titles. This section contains listing of data element definition (DED) numbers and titles. For each DED, the rela-

tional table location(s) in which the data element appears, by table and element codes, are depicted.

20.2 Section 2: Listing of data element codes.

phabetical. listing of the data element codes used on the LSAR data relational tables with cross-references to the data element roll names they represent, Also listed are the applicable DED numbers.

20.3 Section 3: DEDs. This section contains definitions for all data elements that appear on the LSAR data relationship tables. The DED contains some or all of the following entries. When a standard data element acronym applies, this is also listed in this section.

a.DED number

b.Data element title with acronym

c.Field format

d.DED

e.Data item(s)

f.Data code(s)

g.Role name(s)

20.3.1Format. The general format for the DED is as follows:

Example of actual DED entry:

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A code used to indicate whether the reliability and maintainability parameters entered on the card are allocated, predicted, measured, or comparability analysis values.

20.3.2 Definition of terms.

20.3.2.1DED number. A sequentially assigned number to each data element in the dictionary for use in locating and referencing it throughout the dictionary and data entry instructions (appendix A).

20.3.2.2Data element title. The noun phrase name used to identify the data element. Sufficient adjectival modifiers are used with the noun name to ensure title uniqueness.

20.3.2.3Field format. A specification for the length, type, positional jus-

a.Length. The number of character positions in the data element. In

the event the length is variable, the maximum length is specified.

b.Type. A specification of the character type, wherein:

“A” specifies that all characters of the data entry are alphabetical.

“N” specifies that all characters of the data entry are numerical.

“X” specifies that characters of the data entry are alphabetical, numerical, special, or any combination thereof,

“D” specifies that characters of the data entry are numerical with floating decimal. Decimals may be entered as required, or the entry may be in the form of exponential notation, e.g. , “0.0000325” or “3.25E-5”; “426250000” or “4.2625E+8”.

c. Justification. Specifies from which side of the field the characters of the data element are entered. Those starting at the left are left justified (L), those starting at the right are right justified (R). Those which always occupy the entire field are fixed (F), as shown below. A dash (-) is used if this column is not applicable.

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d. Decimal Placement. Specifies the number of character positions to the right of the assumed decimal point when the data element is numeric in all character positions. A dash (-) is used if this column is not applicable. AS means “As Specified” and the detailed instructions will indicate the location of decimal points.

20.3.2.4DED. A narrative definition of the data element in sufficient detail to present a clear and complete understanding of the precise data or element of information that the data element represents.

20.3.2.5Data item. One of a set of descriptive items of information or

values that apply to a data element, For example, the data element “Skill Level Code” contains the data items “Basic”, “Intermediate”, and “Advanced”.

tered in a field on an LSAR data record. A code is used instead of the data item itself, in order to conserve space on the data records and to facilitate machine processing. For example, under the data element “Security Clearance”, and the Data Items “Top Secret”, “Secret”, “Confidential” and “Unclassified”, are represented by the data codes “l”, “2”, “3”, and “4”, respectively.

Note 1: In some cases, a position left blank counts as a data code signifying some particular data item value as specified in the dictionary. For example

Note 2: When data items and data codes are too voluminous to be included in this document, reference is made to items and codes in another document. For example, see Skill Specialty Code, DED No. 379.

20.3.2.7 Role name. A unique modifier of a data element title which describes the use/application of the data element within a specific relational data table location.

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APPENDIX E - SECTION 1

INDEX OF DATA ELEMENT TITLES

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