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

Explain the various interface circuits, Explain the various interface circu...

Explain the various interface circuits.  An I/O interface having of circuitry required to connect an I/O device to computer bus. One side having of a data path with its associa

Expand cpi-c, Expand CPI-C. CPI-C= Common Program Interface Communica...

Expand CPI-C. CPI-C= Common Program Interface Communication.

How does multiplexer know which line to select, How does multiplexer know w...

How does multiplexer know which line to select? This is managed by select lines. The select lines provide communication among different components of a computer. Now let's see

Explain 16-bit ROM array, Draw the logic diagram of 16-bit ROM Array and ex...

Draw the logic diagram of 16-bit ROM Array and explain its principle of operation. Ans: 16-bit ROM Array: A ROM that is read-only memory is an array of selectively closed

How does tcp achieve reliability, How does TCP achieve reliability? One...

How does TCP achieve reliability? One of the most significant technologies is retransmission. While TCP stands data the sender compensates for packet loss through implementing

Micooperation, please suggest me ,how to write microopertions,and study for...

please suggest me ,how to write microopertions,and study for computer architecture

What is interpreter, What is interpreter? An  interpreter is a program ...

What is interpreter? An  interpreter is a program that appears to execute a source program as if it were machine language.

Decision trees - artificial intelligence, Decision Trees - Artificial intel...

Decision Trees - Artificial intelligence: Suppose you just ever do four things at the weekend: go shopping, watch a film, play tennis or just stay inside.  What you do depends

Search-based tools, The search-based tools initially identify the problem a...

The search-based tools initially identify the problem and after that appropriately give advice on how to correct it. AT Expert from Cray Research is one of the tools being used

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