Computers and Technology, 19.11.2019 06:31 dsaefong00
2. consider the following normalized relations for a sports league and assume that the database is global in scope and covers thousands of leagues, tens of thousands of teams, and hundreds of thousands of players. team(teamid, teamname, teamlocation, teammanager, teamleague)player(playerid, playerfirstname, playerlastname, playerdateofbirth, playerspecialtycode, teamid)specialty(specialtycode, specialtydescription, salary)location(locationid, cityname, citystate, citycountry, citypopulation) manager(managerid, managername)league(leagueid, leaguename, leaguelocation)a. do you see any denormalization opportunities? b. what are the first steps that you can take to improve the performance of the database? c. specify the types of indexes you would recommend for each of the following situations: 1. reporting players by team using the team name 2. reporting players of a specific specialty using the specialty code. how is your answer different if the report is using specialty description as input? 3. reporting the players whose salary is above a specific value. 4. reporting teams and their players by cityd. do you see any partitioning opportunities based on the above queries?
Answers: 2
Computers and Technology, 21.06.2019 18:00
Assume that you have an array of integers named a. which of these code segments print the same results? int i = 1; while(i < a.length) { system.out.println(a[i]); i++; } int i; for (i = 0; i < a.length; i++) { system.out.println(a[i]); } for (int i : a) { system.out.println(i); } i and ii only ii and iii only i and iii only all three print the same results. all three print different results.
Answers: 3
Computers and Technology, 23.06.2019 10:00
What is estimated time of arrival (eta)? a device that measures the acceleration (the rate of change of velocity) of an item and is used to track truck speeds or taxi cab speeds a gps technology adventure game that posts the longitude and latitude location for an item on the internet for users to find a north/south measurement of position the time of day of an expected arrival at a certain destination and is typically used for navigation applications
Answers: 3
Computers and Technology, 24.06.2019 17:30
When you type january in a cell, then copy it using the fill handle to the cells below and the data automatically changes to february, march, april, and so on, what is this feature called? auto fill automaticcopy monthfill textfill
Answers: 1
Computers and Technology, 25.06.2019 05:30
You are asked to calculate an object's velocity, in order to do so you must know the object's a. direction and speed. b. distance and time. c. speed and distance. d. direction and distance.
Answers: 1
2. consider the following normalized relations for a sports league and assume that the database is g...
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