Can some one please help me thank u.

What is the small picture or icon on the screen whose position is controlled by the mouse?

Fittoniya [83]

Answer:

cursor

Explanation:

beacause it uz controlled by pointing device, such as a mouse, pen, or trackball

7 0

2 years ago

Most nosql data stores were created to address problems associated with storing large amounts of distributed data in __________.

finlep [7]

NoSQL is primarily designed for supporting the decision making systems. Most NoSQL data stores were created to address problems associated with storing large amounts of distributed data in relational database management systems(RDBMS).
RDBMS is system used for the management of the database.Data is stored in the form of related tables.

3 0

3 years ago

.Although SQL is a language, you donât use it to write applications? (true, false)

Evgen [1.6K]

Answer:

True

Explanation:

SQL stands for structured query language , which is used to query Relational Database Management systems like SQLServer. This is not for writing applications like business layer where we use some programming languages.SQL is meant for data layer to perform CRUD operations against database.

CRUD operations :

Create

Read

Update

Delete

we can perform above operations on database by using SQL query language

6 0

3 years ago

Matching parentheses. An math expression may have a number of parentheses like (, ), [, ], { and }. Each openning parenthesis (,

Solnce55 [7]

C++ Code

#include
using namespace std;

bool match(const char exp[],const int s)
{
// declare a character array to perform stack operations
char stack[s];

// declare top and initialize to -1 and flag to 0
int top=-1,i,flag=0;

// visit all characters in the expression string
for(i=0;i {
// if the character is [ or ( or { then push it into stack
if(exp[i]=='[' || exp[i]=='(' || exp[i]=='{')
{
top++;
stack[top]=exp[i];
}
// if the character is ] or ) or } then check conditions
else if(exp[i]==']' || exp[i]==')' || exp[i]=='}')
{
// check stack is empty or not
if(top!=-1)
{
// check all possible failure conditions
if(exp[i]==')' && (stack[top] == '{' || stack[top]=='['))
{
flag = 1;
break;
}
else if(exp[i]==']' && (stack[top] == '{' || stack[top]=='('))
{
flag = 1;
break;
}
else if(exp[i]=='}' && (stack[top] == '(' || stack[top]=='['))
{
flag = 1;
break;
}
top--;
}
else
{
flag=1;
break;
}
}
}
// after visiting all characters of expression string check if stack is not empty and flag is 1. if any one of the condition is true return false. otherwise return true

if(top>=0 || flag==1)
return false;
else
return true;
}

int main()
{

// declare character array to store expression
char exp[10000];
cout<<"Enter an Expression"<
// read expression from user
cin.getline(exp, 10000);
int s=0;

// find the length of the expression string
for(int i=0;exp[i]!='\0';i++)
{
s++;
}

// call the match function
bool status = match(exp,s);

// print the result based on value returned by match() function
if(status == 1)
cout<<"true"< else
cout<<"false"<
}

Sample Input/Output is attached

3 0

2 years ago

Research and discuss the similarities and differences between cloud computing and client-server computing. Discuss the pros and

harkovskaia [24]

Answer:

Cloud computing as a virtual hosting tool, is much more theoretical. Both servers, applications, and communications are hosted in the cloud, off property, rather than being available via computer machine whereas In computing client/server, a controller gets client requests mainframes and needs to share its services, programs and/or data of one sometimes more client systems on the internet, and a client would be a portable platform that specific portions with a server and make use of a finite resource.

Explanation:

Similar to cloud computing and client-server computing: - 

The cloud computing and client-server networking underpinning principles are the same. That is contact between client and server.
Throughout networking and client-server networking, user nodes can communicate (queries) with databases that live locally or are located in many other networks.

Difference between computing and client-server computing: -

Resources: -

In computing client-server, the corporation or association controls the tools.
The services are offered in cloud computing by third parties or other businesses.

The purpose of cloud computing and client-server computing is different:-

Client-server computing is targeted at use. In computation, client-server clients request a product from the cloud. The operating system runs the test, then returns it.
Cloud computing is a sort of system in which the IT-related services are leased to the clients as a contract.

Pros and cons of Cloud Computing:-

The Pros:-

Lower costs for business:-The cloud is saving a lot of money for a medium-sized or small enterprise.
Better Reliability:- A dedicated group of experts performs all programming with such a cloud computing alternative.

The Cons:-

Limited Control:- When a firm stores cloud data, they have very limited control of it.
There have been security issues. The cloud isn't too attuned for every company to position some information on even a cloud.

Pros and cons of client-server computing:-

The Pros:-

Improved data sharing:- Data stored via the normal business method and processed on a server is available over an approved connection for the intended users.
Security:- Database has stronger access control and methods to ensure data could only be accessed or abused by approved clients.

The Cons:-

Overloaded Servers:- When multiple simultaneous requests from the client are made, the server is significantly overloaded, causing congestion in traffic.
Impact of centralized architecture:- Because it is centralized if a vital server fails to satisfy customer requests, the client-server then lacks good network robustness.

5 0

4 years ago