Figure 30: Example plan output highlighting block granule processing Although block-based granules are the most common approach, there are some operations that can benefit from leveraging the underlying data structure of a partitioned table. In these cases a partition becomes a granule of work. ...
CARDINALITY- Estimated number of rows produced by this step OPTIMIZER- RULE or CHOOSE ACCESS_PREDICATES- Predicate to locate rows in the access structure. FILTER_PREDICATES- Predicate that will filter rows before returning them from this step For the Oracle's cost-based optimizer (CBO) to work c...
Briefly explain the purpose of the loop, or iteration, structure. Then provide an original example algorithm with the loop structure. Why is a bitmap index used in data warehousing? How does cloud storage work? Do you always need to get the largest amount of RAM possible? Why or why not...
CARDINALITY- Estimated number of rows produced by this step OPTIMIZER- RULE or CHOOSE ACCESS_PREDICATES- Predicate to locate rows in the access structure. FILTER_PREDICATES- Predicate that will filter rows before returning them from this step For the Oracle's cost-based optimizer (CBO) to work c...
Example 11-14, "EXPLAIN PLAN Output" is an example of the plan table output when using the UTLXPLS.SQL script. UTLXPLP.SQL This script displays the plan table output including parallel execution columns. DBMS_XPLAN.DISPLAY table function This function accepts options for displaying the plan ...
• In OOP, writing programs with the help of objects is much similar to working with real-world objects. That is, the real world objects can be conveniently represented in a program which reduces the complexity of the program and also makes the program structure clear. ...
Explain with examples what is meant by lossy decomposition and how this problem can be avoided in DBMS. Consider the problem of computing N! = 1 2 3 N. (a) If N is an n-bit number, how many bits long is N!, approximately (in () form)? (b) Give an algorithm to ...
SELECT PLAN_TABLE_OUTPUT FROM TABLE(DBMS_XPLAN.DISPLAY()); Auto DOP The note structure displaying why Auto DOP did not work (with the exception noted above on IO Calibrate) is like this: Automatic degree of parallelism is disabled: <reason> These are the ...
Figure 30: Example plan output highlighting block granule processing Although block-based granules are the most common approach, there are some operations that can benefit from leveraging the underlying data structure of a partitioned table. In these cases a partition becomes a granule of work. ...
Learn more about this topic: What Is an Information System? from Chapter 1/ Lesson 1 222K Information systems are a key part of businesses and integrate technology and human resources to achieve organizational goals. Explore what is an information system and examine the three main components of...