Fourth-generation Languages: Principles"This book seeks to set the field of fourth--generation languages into perspective, discussing the mechanism, uses and future evolution of the new tools."--Preface |
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Page 23
... Decision - Support Tools A very valuable type of language is one designed to help in making decisions . Such languages make it easy for a user to build decision - support data bases and to perform calculations automatically on data when ...
... Decision - Support Tools A very valuable type of language is one designed to help in making decisions . Such languages make it easy for a user to build decision - support data bases and to perform calculations automatically on data when ...
Page 279
James Martin, Joe Leben. 15 DECISION - SUPPORT LANGUAGES DSS LANGUAGES Decision - support languages are an important category of 4GL . They help their users analyze data , answer what - if questions , create financial or other models ...
James Martin, Joe Leben. 15 DECISION - SUPPORT LANGUAGES DSS LANGUAGES Decision - support languages are an important category of 4GL . They help their users analyze data , answer what - if questions , create financial or other models ...
Page 359
... decision - support data base . The decision - support data base may be on the same mainframe or may be in a separate computer . Increasingly , it is likely to be on powerful personal computers ( Fig . 19.5 ) . tem . Figure 19.6 shows ...
... decision - support data base . The decision - support data base may be on the same mainframe or may be in a separate computer . Increasingly , it is likely to be on powerful personal computers ( Fig . 19.5 ) . tem . Figure 19.6 shows ...
Contents
What Are FourthGeneration Languages? | 1 |
Procedural Versus Nonprocedural Languages 7 User Friendliness | 9 |
Avoidance of Gobbledygook 14 Simple Tools for Simple Tasks | 16 |
Copyright | |
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action diagram Application Development automatically bracket BUBONIC PLAGUE building CALL PROJE2 checks COBOL column compiler complex COMPUTATIONAL VALUE computer-aided design create CUR1 cursor data base data dictionary data model data-base DATATRIEVE decisecond decision-support default options development life cycle dialogue display DP professionals employ EMPLOYEE end users ENDIF enter errors example executed expert systems facilities field Figure files forecast format fourth-generation languages functions graphics guage HOSPNAME human factoring ILENGTH information center input INTELLECT interaction lines of code logic LOOP machine mainframe manipulate menu mnemonics nonprocedural on-line operations ORDER.DISCOUNT PERFORM PRIN1 PERFORM TAB personal computers PICTURE S9(8 PL/I possible problems procedural productivity programming language prototype query language RAMIS requirements SALES screen SELECT spreadsheet spreadsheet tools STRBUFF MOVE structures SUPPLIER syntax systems analysts techniques terminal testing third-generation languages tion types UPDATE user computing user-friendly V-15 BLANKA VALUE SPACE variables WARDNO