What is index cluster?

What is index cluster?
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1 Answer

Answer :

A cluster with an index on the cluster key.
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Related questions

What is Index Cluster ?

Description : What is Index Cluster ?

Last Answer : A Cluster with an index on the Cluster Key

.When can hash cluster used?

Description : .When can hash cluster used?

Last Answer : Hash clusters are better choice when a table is often queried with equality queries. For such queries the specified cluster key value is hashed. The resulting hash key value points directly to the area on disk that stores the specified rows.

When can hash cluster used?

Description : When can hash cluster used?

Last Answer : Hash clusters are better choice when a table is often queried with equality queries. For such queries the specified cluster key value is hashed. The resulting hash key value points directly to the area on disk that stores the specified rows.

What is hash cluster?

Description : What is hash cluster?

Last Answer : A row is stored in a hash cluster based on the result of applying a hash function to the row's cluster key value. All rows with the same hash key value are stores together on disk.

What is Hash Cluster ?

Description : What is Hash Cluster ?

Last Answer : A row is stored in a hash cluster based on the result of applying a hash function to the row's cluster key value. All rows with the same hash key value are stores together on disk.

What is the purpose of a cluster?

Description : What is the purpose of a cluster?

Last Answer : Oracle does not allow a user to specifically locate tables, since that is a part of the function of the RDBMS. However, for the purpose of increasing performance, oracle allows a developer ... from different tables together for faster retrieval than if the table placement were left to the RDBMS.

What is cluster key?

Description : What is cluster key?

Last Answer : The related columns of the tables in a cluster are called the cluster key.

What is a cluster Key ?

Description : What is a cluster Key ?

Last Answer : The related columns of the tables are called the cluster key. The cluster key is indexed using a cluster index and its value is stored only once for multiple tables in the cluster.

In SQL, the command(s) is (are)used tocreate an index for atable or cluster A. CREATE INDEX B. MODIFY INDEX C. SET INDEX TO FILE D. All of theabove E. None of the above

Description : In SQL, the command(s) is (are)used tocreate an index for atable or cluster A. CREATE INDEX B. MODIFY INDEX C. SET INDEX TO FILE D. All of theabove E. None of the above

Last Answer : CREATE INDEX

Can null keys be entered in cluster index, normal index ?

Description : Can null keys be entered in cluster index, normal index ?

Last Answer : Yes.

How can you rebuild an index?

Description : How can you rebuild an index?

Last Answer : ALTER INDEX REBUILD;

What type of index should you use on a fact table?

Description : What type of index should you use on a fact table?

Last Answer : A Bitmap index.

Give the reasoning behind using an index.

Description : Give the reasoning behind using an index.

Last Answer : Faster access to data blocks in a table.

What is an index segment?

Description : What is an index segment?

Last Answer : Each index has an index segment that stores all of its data.

what is clustered index?

Description : what is clustered index?

Last Answer : In an indexed cluster, rows are stored together based on their cluster key values . Can not applied for HASH.

When should one rebuild an index? (for DBA

Description : When should one rebuild an index? (for DBA

Last Answer : You can run the 'ANALYZE INDEX VALIDATE STRUCTURE' command on the affected indexes - each invocation of this command creates a single row in the INDEX_STATS view. This row is overwritten by the next ANALYZE ... 'badness' of the index can then be judged by the ratio of 'DEL_LF_ROWS' to 'LF_ROWS'.

Why is Oracle not using the damn index? (for DBA

Description : Why is Oracle not using the damn index? (for DBA

Last Answer : This problem normally only arises when the query plan is being generated by the Cost Based Optimizer. The usual cause is because the CBO calculates that executing a Full Table Scan would be faster ... with AUTOTRACE to see the statistics. Compare this to the explain plan when not using an index.

What is an Index ? How it is implemented in Oracle Database ?

Description : What is an Index ? How it is implemented in Oracle Database ?

Last Answer : An index is a database structure used by the server to have direct access of a row in a table. An index is automatically created when a unique of primary key constraint clause is specified in create table comman (Ver 7.0)

How are the index updates?

Description : How are the index updates?

Last Answer : Indexes are automatically maintained and used by Oracle. Changes to table data are automatically incorporated into all relevant indexes.

What is an Oracle index?

Description : What is an Oracle index?

Last Answer : An index is an optional structure associated with a table to have direct access to rows, which can be created to increase the performance of data retrieval. Index can be created on one or more columns of a table.

What is an Index ?

Description : What is an Index ?

Last Answer : An Index is an optional structure associated with a table to have direct access to rows, which can be created to increase the performance of data retrieval. Index can be created on one or more columns of a table.

What is an Index Segment ?

Description : What is an Index Segment ?

Last Answer : Each Index has an Index segment that stores all of its data.

What is a Global Index and Local Index?

Description : What is a Global Index and Local Index?

Last Answer : Local Index - each partition of a local index is associated with exactly one partition of the table. Global Index - global index is associated with multiple partitions of the table. ... - Global Hash Partitioned Indexes Global Nonpartitioned Indexes - behave just like a nonpartitioned index.

What is an Index Organized Table?

Description : What is an Index Organized Table?

Last Answer : An index-organized table (IOT) is a type of table that stores data in a B*Tree index structure. Normal relational tables, called heap-organized tables, store rows in any order (unsorted). In contrast ... all the columns of the table (an exception to this rule - is being called the overflow area).

A Column is having many repeated values which type of index you should create on this column, if you have to?

Description : A Column is having many repeated values which type of index you should create on this column, if you have to?

Last Answer : For example, assume there is a motor vehicle database with numerous low-cardinality columns such as car_color, car_make, car_model, and car_year. Each column contains less than 100 distinct values by themselves, and a b tree index would be fairly useless in a database of 20 million vehicles.

What is B-Tree Index?

Description : What is B-Tree Index?

Last Answer : A B-Tree index is a data structure in the form of a tree, but it is a tree of database blocks, not rows. Note: "B" is not for binary; it's balanced.

Is the welfare system in your state a complete cluster?

Description : Is the welfare system in your state a complete cluster?

Last Answer : I hope you are joking about buying her a pizza. If she is out of food with 4 kids, I hope you are buying her at least a weeks worth of groceries. Yes, I believe all welfare systems have problems, ... know how to scam the system, so it takes food out of the mouths of those that really need it.

Have you ever been in a situation where someone thought they were being polite, but in reality were creating a cluster of confusion and frustration?

Description : Have you ever been in a situation where someone thought they were being polite, but in reality were creating a cluster of confusion and frustration?

Last Answer : yes this happens all the time with a few family members lol they are way too nice and end up creating a problem at the end all they say is” i am really sorry if this was my fault is there anything i can do to help ” please dont lol

Which is safer on the freeway: Merging into a cluster of tightly packed cars at the cluster's speed of 60 MPH? Or going around the entire cluster at 80 MPH and then pulling into a clear spot?

Description : Which is safer on the freeway: Merging into a cluster of tightly packed cars at the cluster's speed of 60 MPH? Or going around the entire cluster at 80 MPH and then pulling into a clear spot?

Last Answer : answer:What is the speed limit? What kind of roadway? What are the driving conditions? These all play a factor.

Can you tell me how you help ease the pain of a Migraine or Cluster Migraine?

Description : Can you tell me how you help ease the pain of a Migraine or Cluster Migraine?

Last Answer : i work with load animals everyday and always have them. i eat a hersey bar and drink a doctor pepper and take an asprin. works for me

cluster of insect on string beans

Description : cluster of insect on string beans

Last Answer : Need Answer

identify, purple flowers, cluster, California

Description : identify, purple flowers, cluster, California

Last Answer : Need Answer

Cluster of mushrooms die and leave a black spot. What is it and what should we do?

Description : Cluster of mushrooms die and leave a black spot. What is it and what should we do?

Last Answer : When you first see them you need to use funguscide on them. That will kill them...Use gloves to remove them and bag and trash them. Lawn & garden store sells it made up or you mix. ... Keep children & pets away from this area until it is dry. Reread the directions and follow them carefully.

What is the best way to grow green grapes, have only had one cluster two years in a row

Description : What is the best way to grow green grapes, have only had one cluster two years in a row

Last Answer : Need Answer

my peach tree has tons of peaches small inszn still grn should there be a cluster or room to grow brieath?

Description : my peach tree has tons of peaches small inszn still grn should there be a cluster or room to grow brieath?

Last Answer : Make a fist and that is the room that should be allowed between each peach. Lighten the load and there is less chance of a limb breaking off.

What is this tree/weed. Strong smelling white flowers in cluster, thorns

Description : What is this tree/weed. Strong smelling white flowers in cluster, thorns

Last Answer : Sounds invasive. thorns........if you have children, grandchildren or pets, you might want to get rid of this before someone gets injured.

Name the state where the largest wind farm cluster is located ? -SST 10th

Description : Name the state where the largest wind farm cluster is located ? -SST 10th

Last Answer : The largest wind farm cluster is located in Tamil Nadu. (From Nagarcoil to Madurai)

Where is the largest wind farm cluster located in India? -SST 10th

Description : Where is the largest wind farm cluster located in India? -SST 10th

Last Answer : The largest wind farm cluster is located in Tamil Nadu from Nagarcoil to Madurai.

The United States Air Force used what gaming console to create a cluster supercomputer? -Gaming

Description : The United States Air Force used what gaming console to create a cluster supercomputer? -Gaming

Last Answer : US Air Force connects 1,760 PlayStation 3's to build supercomputer. The Condor Cluster consists of 1,760 Sony PlayStation 3's, and is the US Department of Defense's fastest interactive computer.

Is it possible for a star cluster to change it metallicity during time by YSO's appearance? -Space

Description : Is it possible for a star cluster to change it metallicity during time by YSO's appearance? -Space

Last Answer : yes,Since all the stars in a cluster formed at the same time, they are all the same age. A very young cluster will have a HR diagram with a cluster of T-Tauri stars evolving ... The rest become gravitationally bound, meaning they will exist as collection orbiting each other forever. thank you

What does Cluster mean ?

Description : What does Cluster mean ?

Last Answer : Cluster means bunch.

What does Cluster mean ?

Description : What does Cluster mean ?

Last Answer : Cluster means to gather.

Surfacetant molecules can cluster together as micelles, which are colloid sized cluster of molecules. Micelles from only above critical micelle concen

Description : Surfacetant molecules can cluster together as micelles, which are colloid sized cluster of molecules. Micelles from only above critical micelle concen

Last Answer : Surfacetant molecules can cluster together as micelles, which are colloid sized cluster of molecules. ... . `DeltaS` of micelle formation is negative

What where among the chief exports produced by colonists in cluster c?

Description : What where among the chief exports produced by colonists in cluster c?

Last Answer : Need answer

What is the collective noun of cluster of houses in villages?

Description : What is the collective noun of cluster of houses in villages?

Last Answer : Collective noun of a cluster of houses in village

If you are interested in piloting planes driving trucks or steering ships the best career cluster for you might be?

Description : If you are interested in piloting planes driving trucks or steering ships the best career cluster for you might be?

Last Answer : transportation, distribution, and logistics - apex

What is a spherical cluster of stars?

Description : What is a spherical cluster of stars?

Last Answer : That is called a globular cluster.

What is a spherical cluster of stars?

Description : What is a spherical cluster of stars?

Last Answer : That is called a globular cluster.

Cluster headache?

Description : Cluster headache?

Last Answer : DefinitionA cluster headache is one-sided head pain that may involve tearing of the eyes and a stuffy nose. Attacks occur regularly for 1 week to 1 year, separated by long pain-free periods that last at ... , but they appear to be related to the body's sudden release of histamine or serotonin.The fo

What is used to describe a set of data where the measures cluster or concentrate at a point?

Description : What is used to describe a set of data where the measures cluster or concentrate at a point?

Last Answer : The answer depends on the type of distribution for the data. It could be the modal class.