Initial thought process, Computer Engineering

Assignment Help:

Initial thought process:

Design a script which was simple and user friendly.  Integrate procedures/functions to extract data under the hood.  I focused on giving the user the option to retrieve information based on a time period, meaning using start date and end date to define a search constraint.  For example, if a user wants information from 1-MAR-12 to 8-MAR-12, he or she can plug those dates in as search parameters.

Queries:  I designed the queries to answer the project questions.

Scripts:  pop_fact_table.sql, which means populate fact table, receives 2 parameters type, DATE, uses the dateas conditions within a select statement to create a cursor.These parameters are used to set a time period boundary.  Also the order_items idsare extracted because they are unique and I used them as a condition to get theoi.movie_id, dml.distributor_id, store_id, o.total_payment, o.tax, number_of_itemsdata from multiple tables.  I used order_completed_date because I felt it was importantto extract information for orders completed instead of just using the ordering date.Ordering date does not mean the order was completed.  Also I fed this date intoa function which could build my time dimension table and return the time_id to insert into the facts table.  Finally, the information gathered from order_items were inserted in the facts table.

  • Fill_time_dim.sql receives a parameter type, DATE, from pop_fact_table.sql, analyzes the date, then determines the month, quarter and year in which it belongs. Finally it uses this data and a generated time_id from sequence to populate the time dimension table.
  • Star_schema_table.sl drops and creates the shell for the 4 dimensions tables and the fact table.
  • Add_constraints.sql sets the 4 dimension primary keys as primary and foreign keys on the facts table.
  • User_interface.sql is used to simulate a user's terminal requesting information. Initially, it builds the table shells and adds constraints. Once the user determines his/her search time period, data is etracted from the operational database and is placed in the facts table.

Related Discussions:- Initial thought process

Define the heat transfer processes, Heat Transfer Coursework An interna...

Heat Transfer Coursework An internal combustion engine of a passenger car is operating at steady state conditions e.g. constant speed (r.p.m.) and load (torque), so the engine

Explain switch statement, Switch This is another form of the multi way ...

Switch This is another form of the multi way decision. It is well structured, but can only be used in certain cases where; Only one variable is tested, all branches must

On what machines matlab should be run?, Matlab will run from sthelens, and ...

Matlab will run from sthelens, and only if sthelens is down, from cher, orsay or tiree. It runs on other machines too, but some of the other machines have older versions of the OS

What is write miss, What is write miss? During the write operation if t...

What is write miss? During the write operation if the addressed word is not in cache then said to be write miss.

Explain rudimentary file formats, Q. Explain rudimentary file formats? ...

Q. Explain rudimentary file formats? FTP only understands two rudimentary file formats. It classifies every file either as a text file or a binary file. A text file comprise a

What is sap luw or update transaction, What is SAP LUW or Update Transactio...

What is SAP LUW or Update Transaction? Update transaction (or "SAP LUW") This is a set of updates terminated by an ABAP/4 commit.  A SAP LUW may last much longer than a data

C++, #question.constructors and destructors

#question.constructors and destructors

What do you meant by a storage device, Question : (a) What do you me...

Question : (a) What do you meant by a storage device? (b) List 5 examples of storage devices and give their uses (c) What are the differences between backup and ar

Free memory space to form contiguous block of free space, The OS of a compu...

The OS of a computer might be periodically collect all the free memory space to form contiguous block of free space.  Garbage collection

Use of intrinsic functions in fortran, Q. Use of Intrinsic Functions in FOR...

Q. Use of Intrinsic Functions in FORTRAN? HPF initiates some new intrinsic functions also to those defined in F90. The two mainly often used in parallel programming are system

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd