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Bess [88]
3 years ago
12

Define the following term. data, database, DBMS, database system, data- base catalog, program-data independence, user wen', DBA,

end user, canned transaction, deductive database system, persistent object, meta-data, and transaction-processing application. 1.2.
What four main types of actions involve databases?
Computers and Technology
1 answer:
wolverine [178]3 years ago
4 0

Answer:

data - Any form of value in a column of a table in a relational database.

DBMS - Short for Database management system, which is a software that can be used to create, manipulate and view databases, e.g. MS SQL Server.

database system - Same as DBMS.

database catalog - Place where the metadata of a Database, its tables, users etc. exists e.g. date created, size, number of columns etc. Also known as Data Dictionary.

program-data independence - Program-data independence refers to the capability of leaving data intact and accessible regardless of modifications to the database that contains the data.

DBA - Short for Database Administrator, person responsible for maintaining the database. Its main responsibility is to keep the data clean and safe i.e. data doesn't contain wrong or invalid data, and is safe from viruses and is backed up.

end user - Anyone who is not directly interacting with a database, but through some software like website and mobile application.

persisten object - An object of a class in a program, that interacts with the underlying database and is responsible for manipulating the database connected to.

transaction-processing system - A transaction process system is part of a software, responsible for making sure critical business transactions, like crediting or debiting money, either goes through cleanly or doesn't at all.

CRUD are the four main types of operations one can do in a database environment. It stands for creating, reading, deleting and updating.

Explanation:

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Which two statements are true about algorithms?
DENIUS [597]

Answer:

I. Algorithms can be written using pseudocode.

II. Algorithms can be visualized using flowcharts.

Explanation:

An algorithm can be defined as a standard formula or procedures which comprises of set of finite steps or instructions for solving a problem on a computer. The time complexity is a measure of the amount of time required by an algorithm to run till its completion of the task with respect to the length of the input.

The two statements which are true about algorithms are;

I. Algorithms can be written using pseudocode. A pseudocode refers to the description of the steps contained in an algorithm using a plain or natural language.

II. Algorithms can be visualized using flowcharts. A flowchart can be defined as a graphical representation of an algorithm for a process or workflow.

Basically, a flowchart make use of standard symbols such as arrows, rectangle, diamond and an oval to graphically represent the steps associated with a system, process or workflow sequentially i.e from the beginning (start) to the end (finish).

3 0
3 years ago
Read 2 more answers
Differentiate between computer organization and computer architecture with example
vazorg [7]
<span><span>Computer architecture was essentially a contract with software stating unambiguously what the hardware does. The architecture was essentially a set of statements of the form "If you execute <span>this </span>instruction (or get an interrupt, etc.), then that is what happens." <More sophisticated readers: I get to the term "ISA" later.>
</span><span>Computer organization, then, was a usually high-level description of the logic, memory, etc., used to implement that contract: These registers, those data paths, this connection to memory, etc.

</span></span>Computer Architecture and Computer Organization Examples

<span>Intel and AMD make X86 CPUs where X86 refers to the computer architecture used. X86 is an example on a CISC architecture (CISC stands for Complex Instruction Set Computer). CISC instructions are complex and may take multiple CPU cycles to execute. As you can see, one architecture (X86) but two different computer organizations (Intel and AMD flavors).
<span>
nVidia and Qualcomm on the other hand make GPUs (graphics processing unit as opposed to a CPU central processing unit). These GPUs are based on the ARM (Advanced RISC Machines) architecture. ARM is an example on a RISC architecture (RISC stands for Reduced Instruction Set Computer). Instructions in an ARM architecture are relatively simple and typically execute in one clock cycle. Similarly, ARM here is the computer architecture while both nVidia and Qualcomm develop their own flavor of computer organization (i.e architecture implementation)</span></span>
8 0
4 years ago
A programmer must add 1 to the value stored in the int variable sum. One way is given to get you started. Write two more distinc
olganol [36]

Answer:

option 1: sum++

option 2: ++sum

Explanation:

In programming, a variable a container or memory location assigned to a value. The C++ syntax specifies the memory location type of value on the declaration. The major types of variables in C++ are; integer, float, double, char, string, and boolean.

To add 1 to an integer variable, the variable value could be summed with one and assigned to that same variable or '++before' and 'after++' with adds one to the variable before and after the execution of a statement.

4 0
3 years ago
Who is right?
Verdich [7]

Answer:

A) Technician A says a fuel injector pulsed flow test measures steady or maximum fuel flow with the injector pintle and nozzle held fully open.

Explanation:

Through the fuel injector the fuel is injected, and the fuel injector pulsed flow test helps us understand the functioning of the machine at various pulse width, and varying fuel flow ranging from the least to the maximum. The first one is definitely a situation. And hence Technician A is definitely correct. However, Technician B is not correct, as for checking the pintle response you need to change the pulse width. However, technician B is mentioning that he always test with normal pulse width, and this is definitely not true. Hence Technician A is the right person.

5 0
3 years ago
Create a Python program to solve a simple pay calculation.
Travka [436]

Answer:

def weeklyPaid(hours_worked, wage):  

   if hours_worked > 40:  

       return 40 * wage + (hours_worked - 40) * wage * 1.5

   else:  

       return hours_worked * wage  

 

 

hours_worked = 50

wage = 100

 

pay = weeklyPaid(hours_worked, wage)  

 

print(f"Total gross pay: Rs.{pay:.2f} ")

Explanation:

provides gross pay

6 0
3 years ago
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