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Write a procedure named Get_frequencies that constructs a character frequency table. Input to the procedure should be a pointer to a string, and a pointer to an array of 256 doublewords. Each array position is indexed by its corresponding ASCII code. When the procedure returns, each entry in the array contains a count of how many times that character occurred in the string. Include the source code only.
Write SQL queries for the books database that perform each of the following tasks: Select all authors from the Authors table with the columns in the order lastName, firstName and authorID.
What are triggers used for, and why are they significant in database systems? Give an example of situation where a trigger would be appropriate. What would implementation of this trigger look like?
Create a database for Ray. He is interested in movies and wants to keep information on movies, actors, and directors in a database. The only user is Ray, and he needs to produce reports.
Draw an ER diagram for your database scenario. Design a set of 3NF tables for your database scenario.
Identify the business processes which would be evaluated and tracked with a DW/BI application and state your reasoning or justification for including these in the DW/BI.
Create and run the following sql queries and submit the screen shot of your result. Also submit the file lab_06_03. sql
Draw an object-oriented model for a small private airport database that is used to keep track of airplanes, their owners, airport employees, and pilots.
Mark the following words in the document as index entries: behavior (four instances), favorable (five instances), and impression (eight instances).
The library System stores 3 type of informations: Users ( USID, USNAME, USMob, USEmail, USDept,USStartDate, NofBooks). Create the library database schema Structure.
Create a structurally sound relational database schema showing the minimum number of fields, tables, and relationships between the tables.
Use the results of the transcripts of an interview with IT consultant. Prepare a Fully Attributed Data Model. Add the data attributes for each entity."
What is the order P of the B+-tree if B+-tree access structure on the key is constructed? What is the number of leaf-level blocks needed if blocks are approximately 69% full (round up for convenience)?
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