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3 years ago

Data warehousing and data mining mean the same thing when applied to CRM

Computers and Technology

2 answers:

Cerrena [4.2K]3 years ago

8 0

Answer:

True

Explanation:

Data warehousing is the storage of data and easy retrieval of stored data in the data warehouse for analysis of the data.in CRM the retrieval of the data using data Warehousing is the complete retrieval of a customer data from the database distinctively from other data stored in the warehouse

and data mining is the extraction of valuable information from a database as well. in CRM data mining is similar to data warehousing because the retrieved data is a complete view of the customer of an organization. in both cases of data mining and data warehousing in CRM the customer is the point of attraction and this is what makes data mining and data warehousing similar when applied in CRM.

Nata [24]3 years ago

5 0

This is false. Data warehousing is storing the data. Data mining is retrieving and analyzing data from the data warehouse.

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Show the array that results from the following sequence of key insertions using a hashing system under the given conditions: 5,

sergejj [24]

Answer:

a) Linear probing is one of the hashing technique in which we insert values into the hash table indexes based on hash value.

Hash value of key can be calculated as :

H(key) = key % size ;

Here H(key) is the index where the value of key is stored in hash table.

----------

Given,

Keys to be inserted are : 5 , 205, 406,5205, 8205 ,307

and size of the array : 100.

First key to be inserted is : 5

So, H(5) = 5%100 = 5,

So, key 5 is inserted at 5th index of hash table.

-----

Next key to inserted is : 205

So, H(205) = 205%100 = 5 (here collision happens)

Recompute hash value as follows:

H(key) =(key+i) % size here i= 1,2,3...

So, H(205) =( 205+1)%100 = 206%100 = 6

So, key 205 is inserted in the 6th index of the hash table.

----------

Next Key to be inserted : 406

H(406) = 406%100 = 6(collision occurs)

H(406) =(406+1) %100 = 407%100 = 7

So, the value 406 is inserted in 7the index of the hash table.

-----------------

Next key : 5205

H(5205) = 5205%100 = 5(collision)

So, H(5205) = (5205+1)%100 = 6( again collision)

So, H(5205) = 5205+2)%100 = 7(again collision)

So, H(5205) = (5205+3)%100 = 8 ( no collision)

So, value 5205 is inserted at 8th index of the hash table.

-------------

Similarly 8205 is inserted at 9th index of the hash table because , we have collisions from 5th to 8th indexes.

-------------

Next key value is : 307

H(307) = 307%100 = 7(collision)

So, (307+3)%100 = 310%100 = 10(no collision)

So, 307 is inserted at 10th index of the hash table.

So, hash table will look like this:

Key index

5 5

205 6

406 7

5205 8

8205 9

307 10

b) Quadratic probing:

Quadratic probing is also similar to linear probing but the difference is in collision resolution. In linear probing in case of collision we use : H(key) = (key+i)%size but here we use H(key) =( key+i^2)%size.

Applying Quadratic probing on above keys:.

First key to be inserted : 5.

5 will go to index 5 of the hash table.

-------

Next key = 205 .

H(205) = 205%100 = 5(collision)

So. H(key)= (205+1^2)%100 = 6(no collision)

So, 205 is inserted into 6th index of the hash table.

--------

Next key to be inserted 406:

So, 406 %100 = 6 (collision)

(406+1^2)%100 = 7(no collision)

So, 406 is moved to 7th index of the hash table.

----------

Next key is : 5205

So, 5205%100 = 5 (collision)

So, (5205+1^2)%100 = 6 ( again collision)

So, (5205+2^2)%100 = 9 ( no collision)

So, 5205 inserted into 9th index of hash table.

-----------

Next key is 8205:

Here collision happens at 5the , 6the , 9th indexes,

So H(8205) = (8205+4^2)%100 = 8221%100 = 21

So, value 8205 is inserted in 21st index of hash table.

--------

Next value is 307.

Here there is collision at 7the index.

So, H(307) = (307+1^2)%100 = 308%100= 8.

So, 307 is inserted at 8the index of the hash table.

Key Index

5 5

205 6

406 7

5205 9

8205 21

307 8

3 0

3 years ago

The WorkOrders table contains a foreign key, ClientNum, which must match the primary key of the Client table. What type of updat

OlgaM077 [116]

Answer:

Changing the customer number on a record in the Orders table to a number that does not match a customer number in the customer table would violate referential integrity.

If deletes do not cascade, deleting a customer that has orders would violate referential integrity.

If deletes cascade, customer can be deleted and all orders for that customer will automatically be deleted.

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3 years ago

Who invented Computer? Answer Differently

FinnZ [79.3K]

Answer:

Charles Babbage, an English mechanical engineer and polymath, originated the concept of a programmable computer. He is considered the "father of the computer". He invented the first mechanical computer in the early 19th century.

Explanation:

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2 years ago

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Dmitry [639]

Answer:

How your business is unique
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Explanation:

Respond the subject "Who are you and What your business represents?" as interestingly and compellingly as feasible. This involves recording administration bios that state your expertise, times of struggle and various different qualities or details that may make you special from others.

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3 years ago

You can view information for the individual people who will perform the tasks on theproject in the

marin [14]

Answer:

Resource Sheet view

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3 years ago