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You are asked to create a GIS database of information about Vietnam at scale of 1:100,000. Database will include the following:
Elevation in metersLocations of hospitalsRoadsMap of each province with population of the province
a) Which of these features are best represented by raster model? Explain why?
b) For those features which are best represented in vector format, which would be best represented by point entities, which would be line entities, and which would be polygon entities?
Write a SELECT statement that returns three columns: InvoiceTotal From the Invoices table, 10% 10% of the value of InvoiceTotal.
Use Microsoft Access to develop preliminary (no keys and no relationships) database tables for Huffman Trucking Driver Log.
What does CHS stand for? List three items contained in the FAT database. List two features NTFS provides that FAT does not.
Design an updateable database for storing customer and sales data. Explain how to deal with the problems of missing data.
The relations given below keep track of airline flight information:Flights(flno: integer, from: string, to: string, distance:integer, departs: time, arrives: time, price: real)Aircraft(aid: integer, aflame: string, cruisingrange: integer)
Write the functional dependencies in the following table that concerns invoicing (an application Premiere Products in considering adding to its database), subject to the specified conditions.
Carry out the following tasks below by using the correct SQL statements. Create the statements in Oracle by using the following steps (SQL > SQL commands > Enter Command). Determine the columns that make up the primary key of the l_lunch_items tabl..
Can Oracle have multiple group functions in the same SELECT list of query (i.e can we do a COUNT and AVG)? Let us assume we wanted to find lowest, highest, average.
Describe briefly what are the main benefits of using DBMS to manage data in program applications involving extensive data access.
Using data mining, it is possible to gather information which has been buried that can be manipulated and cross indexed which could be a valuable information gathering technique for entities.
What about giving same name to attributes which are in different tables but are not same? For instance, "Description" in both a Course table and a Classroom table.
Find the maximum salary of all employees who are not managers. Give all the managers in the database a 10 percent salary raise. Give all the other employees a 5 percent salary raise.
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