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The State of NewYork certifies firefighters throughout state and keep track all of them, as well as of the state's fire departments. Each fire department has unique department number, name that also identifies city, county. year was established, its main telephone number. Each certified firefighter has unique firefighter number, name, year of certification, home telephone number, rank (firefighter,fire lieutenant,fire captain) The state wants to record fire department for which each fire fighter currently works and each fire fighter's supervisor. Supervisors are always higher-ranking certified fire fighters.
Construct relational database for New York's fire departments and fire fighters.
Illustrate relational algebra expressions for names of all salespeople, names of all salespeople having ORDER row and names of salespeople not having ORDER row.
What is the business implications that can be drawn from the process of building and comparing these models, and has this practice helped resolve the business issue? Why or why not?
What does CHS stand for? List three items contained in the FAT database. List two features NTFS provides that FAT does not.
Several times, database triggers are utilized to record logins by users. Here is the example of login trigger that inserts row into table every time a user connects.
In physical database design, referential integrity constraints can be defined. What actions does referential integrity constraint prevent from happening when data is inserted in table which contains this constraint?
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.
Company XYZ needs a program to build a database concerning employee information.
What is the average length of stay per room type. What is the average number of visitor per room type. What is the base income per room (i.e., length of visit multiplied by the daily rate) during a specified period of time
MGMT321 Group Project : You were hired as an analyst to develop a new information system to automate the payroll transactions in a mid-size organization. The proposed system will contain employees’ data and interface with the organization’s General ..
Using example of vehicles and drivers, explain issues to convert relationship for new cardinality including new relationships and attributes for the tables.
Database Questions: What do you mean by data base scheme? What do you mean by cardinality ratio? What do you mean by degree of relation?
Suppose you are asked to evaluate a DBMS in terms of lock granularity and the different locking levels. Create a simple database environment in which these features would be important.
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