Rational Unified Process (RUP) methodology

Question: What is RUP methodology?
RUP is a software development process from Rational, a division of IBM.


It divides the development process into four distinct phases that each involve business modeling, analysis and design, implementation, testing, and deployment. Question: What are four phases in RUP?

1. Inception
2. Elaboration
3. Construction
4. Transition

Question: What is Inception?
In this, development team determine if the project is worth pursuing? and what resources will be needed?.


Question: What is Elaboration?
Evaluation of The projects architecture and required resources.
Developers consider possible applications of the software and costs associated with the development.


Question: What is Construction?
The project is developed and completed.
The software is designed, written, and tested.


Question: What is Transition?
The software is released to the public. Final adjustments or updates are made based on feedback from end users

Difference between CreateConnection and poolConnection in NodeJS

MySQL CreateConnection Example

var mysqlClient = mysql.createConnection({
         host     : 'localhost',
         user     : 'root',
         password : '',
         database : 'mydb'
}); 
mysqlClient.connect();
mysqlClient.query(
'SELECT id,name,email FROM `cmf_users` WHERE id = ' + data.uid, function (error, results, fields) {
    console.log(results);
});

MySQL PoolConnection Example

var mysqlPool = mysql.createPool({
       connectionLimit : 10,
       host     : 'localhost',
       user     : 'root',
       password : '',
       database : 'mydb'
});
mysqlPool.getConnection(function(err, mysqlConn) {
mysqlConn.query(
    'SELECT id,name,email FROM `cmf_users` WHERE id = ' + data.uid, function (error, results, fields) {
    console.log(results);
    }
    )
});