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The relational database is the technology basis of accounting information systems. Because the database management system can store and access data very fast and manage internal controls by assigning access control rights. The fast data availability makes many real-time AI applications achievable. You can see the root links between any data-related emerging technologies and relational databases. This chapter teaches you the primary working mechanism of relational databases. MS Access will be used to demonstrate hands-on practicing. Basic concepts in relational databases. What a database is and why it is important. The concepts of the data schema, primary key, and foreign key.
Question 1: The the primary key cannot be null in the relational database design. Please use one or two sentences to explain why?
We want to store the information of different vehicles. Create a class named Vehicle with two data member named mileage and price. Create its two subclasses
*Car with data members to store ownership cost, warranty (by years), seating capacity and fuel type (diesel or petrol).
*Bike with data members to store the number of cylinders, number of gears, cooling type(air, liquid or oil), wheel type(alloys or spokes) and fuel tank size(in inches)
Make another two subclasses Audi and Ford of Car, each having a data member to store the model type. Next, make two subclasses Bajaj and TVS, each having a data member to store the make-type.
Now, store and print the information of an Audi and a Ford car (i.e. model type, ownership cost, warranty, seating capacity, fuel type, mileage and price.) Do the same for a Bajaj and a TVS bike.
the goal of this code is quickly to get off the ground with classes.
given playerName, Nitro and speed are inputs write a super class Race with property and methods
inputs
- the first line of input containing as string playerName
- the second line of input containing as string Nitro
- the third line of input containing as string speed
outputs
- the output consists of multiple lines with the appropriate texts
sample input1
Alyssa
100
sample output1
Race has started
speed 50; Nitro 50
speed 70; Nitro 60
Alyssa is the winner
speed 0; Nitro 60
sample input2
Joel
100
100
sample output2
Race has started
speed 150; Nitro 50
speed 170; Nitro 60
Joel is the winner
speed 0; Nitro 60
1. Solid calcium carbonate is synthesized from calcium oxide powder and carbon dioxide gas.
2. The reaction between calcium carbide (kalburo, CaC2) and water forms acetylene (C2H2) and
calcium hydroxide, Ca (OH)2 .
3. The combustion of the mineral pyrite (FeS2) in oxygen gas produces another mineral hematite
(Fe2O3) and sulfur dioxide.
4. The oxidation of phosphine (PH3) to phosphorus pentoxide (P2O5) is given by the chemical
equation: PH3 + O2 → P2O5 + H2O
5. Thermite welding is an exothermic reaction,which produces molten iron that permanently
binds metals as it cools. The process does not require heat or electricity. Aluminum powder is
simply mixed with ferric oxide powder. The reaction is accompanied by a release of heat, and produces aluminum oxide and molten iron.
Write a program to copy the contents of one file to another
The depth of the fluid is 10 m. What is the specific gravity if the pressure of the fluid at 10 m is 100 kPa?
What force must be exerted on the master cylinder of a hydraulic lift to support the weight of a 2500-kg car (a large car) resting on the slave cylinder? The master cylinder has a 4.00-cm diameter and the slave has a 25.0-cm diameter.
what is the probability that a market inspector will discover greater than five violation of the public health code
1. What is the body symmetry, types of gut, and body cavity of human and starfish
2. Describe 2 human and starfish adaptation features.
Find the rotational inertia of 21.5 kilograms thin-walled cylindrical threshing drum of a modified palay thresher having a radius of 9 inches.
#340153 on Dec 2023