A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2013; you can also visit <a rel="external noopener" href="http://www.vldb.org/conf/1987/P127.PDF">the original URL</a>. The file type is <code>application/pdf</code>.
Incremental reorganization of relational databases
<span title="">1988</span>
<i title="Elsevier BV">
<a target="_blank" rel="noopener" href="https://fatcat.wiki/container/md2ierut4nak5ociupgnvel2oa" style="color: black;">Decision Support Systems</a>
</i>
Preserved Fulltext
The evolution of an information system is reflected in Abstract data modeling by database reorganization. Entity-Relationship consistency expresses the capability of relational databases to model information oriented systems. A relational schema consisting of &ation schemes. together with key and inclusion dependencies, is said to be ER-consistent if it complies with an entity-relationship structure, meaning that it is representable by an ER-Diagram. For ERconsistent schemas the basic
<span class="external-identifiers">
<a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/0167-9236(88)90142-x">doi:10.1016/0167-9236(88)90142-x</a>
<a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/i2bn2k3ciffofmuhcz3wwhir5y">fatcat:i2bn2k3ciffofmuhcz3wwhir5y</a>
</span>
more »
... ing manipulations are the addition and removal of relation schemes, coupled with the modification of the key and inclusion dependencies. Recently we have defined a set of incremental and reversible schema restructuring manipulations as the translatea of a set of vertex-oriented ER-Diagram transformations. For non-empty database states the schema restructuring manipulations must be associated with state mappings, and this leads us to the definition of database reorganization operations; database reorganization operations consist of compatible pairs of incremental restructuring manipulations and entitj4ounded state mappings. For the specification of ER-consistent database state mappings, we propose an Entity-Relationship Calculus.
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20131109224508/http://www.vldb.org/conf/1987/P127.PDF" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext">
<button class="ui simple right pointing dropdown compact black labeled icon button serp-button">
<i class="icon ia-icon"></i>
Web Archive
[PDF]
<div class="menu fulltext-thumbnail">
<img src="https://blobs.fatcat.wiki/thumbnail/pdf/05/2e/052ee43596bd14af7d7d0ee0a5ab875dc3b79847.180px.jpg" alt="fulltext thumbnail" loading="lazy">
</div>
</button>
</a>
<a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/0167-9236(88)90142-x">
<button class="ui left aligned compact blue labeled icon button serp-button">
<i class="external alternate icon"></i>
elsevier.com
</button>
</a>