Carman Scan 1 Software Cardinality Of Sets. The objective is to present an initial set of principles and methods for defining, performing, auditing and pub- lishing RDF and graph database. Put special interest in two main processes inside such organizations: (1) the benchmark development process; and (2) the benchmark execution process. Save carman scan to get e-mail alerts and updates on your eBay Feed. + Items in search results. Carman i100 Diagnostic PC-Based Scan Tool Bluetooth OBDII kit (Made in Korea). OBDLink MX Bluetooth Scan Tool FOR PC ANDROID FREE SOFTWARE & OBDLINK APP. Free Shipping. ![]() I have written a complex oracle sql query and the explain plan stats look like this: Cost: 209,201 Bytes:187,944,150 Cardinality: 409,675 Now the DBA tuned the query and the stats look like this: Cost: 42,996 Bytes: 89,874,138 Cardinality: 209,226 My first question is, if the numbers are lower, does it automatically mean better performance? Geojit flip platinum software corporation. Which number is the most pertient?Cost/Cardinality/Bytes? ![]() My second question is: I understand cardinality is the number of rows read. But when i run the query, it returns '0' rows! My impression was that Cardinality has to be same for two queries that are supposed to return same result sets. This I guess is wrong? Cost, bytes, cardinality. All are estimations according to inputs like statistics given to the optimizer. So they automatically mean nothing but can give an idea. In Oracle Performance Tuning Guide's words 'It is best to use EXPLAIN PLAN to determine an access plan, and then later prove that it is the optimal plan through testing. When evaluating a plan, examine the statement's actual resource consumption.' For 2nd question: Theoretically equivalent queries should return same cardinality. Your tables' statictics may be old.
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