Download e-book for kindle: Abstraction and specification in program development by Barbara Liskov, John V. Guttag
By Barbara Liskov, John V. Guttag
Abstraction and Specification in application improvement deals execs in software layout and software program engineering a strategy that would allow them to build courses which are trustworthy and fairly effortless to appreciate, regulate, and retain. sturdy programming includes the systematic mastery of complexity, and this ebook presents the 1st unified remedy of the recommendations of abstraction and specification, which, the authors argue, are the linchpin of any potent method of programming. They position specific emphasis at the use of knowledge abstraction to supply hugely modular courses. The authors specialise in the method of decomposing huge application tasks into self sustaining modules that may be assigned to autonomous operating teams. They speak about tools of decomposition, the types of modules which are most precious during this method, and methods to extend the possibility that modules produced can in truth be recombined to unravel the unique programming challenge. there are lots of examples of abstractions during the textual content, and every bankruptcy ends with pertinent references and workouts. lots of the pattern implementations within the booklet are written in CLU, certainly one of an increasing number of languages in a position to aid info abstraction. enough fabric is integrated, although, to permit the reader to paintings in Pascal in addition. the cloth during this ebook was once constructed by means of the authors in the course of a decade of educating undergraduate, graduate, and professional-level classes. Barbara Liskov, the developer of CLU, is Professor and John Guttag an affiliate Professor of computing device technology at MIT. Abstraction and Specification in software improvement is incorporated within the MIT electric Engineering and computing device technological know-how sequence.
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If you export the table and specify a subpartition (sp4), only the specified subpartition is exported. 0 - Production on Wed Oct 6 15:24:48 1999 (c) Copyright 1999 Oracle Corporation. All rights reserved. 0 - Production Export done in WE8DEC character set and WE8DEC NCHAR character set 1-36 Oracle8i Utilities Using the Interactive Method About to export specified tables via Conventional Path ... . exporting table EMP . exporting composite partition . exporting subpartition . exporting subpartition .
Current user changed to SCOTT . exporting table EMP 14 rows exported Current user changed to BLAKE . exporting table DEPT 8 rows exported Export terminated successfully without warnings. Example 2 In this example, user BLAKE exports selected tables that he owns. 0 - Production on Wed Oct 6 15:24:38 1999 (c) Copyright 1999 Oracle Corporation. All rights reserved. 0 - Production Export done in WE8DEC character set and WE8DEC NCHAR character set About to export specified tables via Conventional Path ...
Exporting partition M . exporting partition Z Export terminated successfully without warnings. 8 rows exported 6 rows exported Example 2 Assume EMP is a table that is partitioned on employee name. There are two partitions, M and Z. As this example shows, if you export the table and specify a partition, only the specified partition is exported. 0 - Production on Wed Oct 6 15:24:48 1999 (c) Copyright 1999 Oracle Corporation. All rights reserved. 0 - Production Export done in WE8DEC character set and WE8DEC NCHAR character set About to export specified tables via Conventional Path ...
Abstraction and specification in program development by Barbara Liskov, John V. Guttag