Updating your database development

This discussion identifies cultural elements and their influence on behavior and production, and how diversity augments performance and company dynamics.

Mike Julian has recently published Practical Monitoring with O’Reilly, which aims to provide readers with a foundational introduction to the topic of monitoring, as well as practical guidelines on how to monitor service-based applications and cloud infrastrastructure.

As well as using a loop to get information from a database as we have before, you can also use loops to execute queries.

Book: Introducing Microsoft SQL Server 2005 for Developers 1.

The techniques rely on applying continuous integration and automated refactoring to database development, together with a close collaboration between DBAs and application developers.

The techniques work in both pre-production and released systems, in green field projects as well as legacy systems.

First of all, we connect to the database and select the appropriate record.

$id=$_GET[‘id’]; $username=”username”; $password=”password”; $database=”your_database”; mysql_connect(localhost,$username,$password); $query=” SELECT * FROM contacts WHERE id=’$id’”; $result=mysql_query($query); $num=mysql_numrows($result); mysql_close(); $i=0; while ($i The next stage of this script is to actually update the database.

This is a simple operation and just involves a new query for the database: $query = “UPDATE contacts SET first = ‘$ud_first’, last = ‘$ud_last’, phone = ‘$ud_phone’, mobile = ‘$ud_mobile’, fax = ‘$ud_fax’, email = ‘$ud_email’, web = ‘$ud_web’ WHERE id = ‘$ud_id’”; This query tells the database to update the contacts table where the ID is the same as the value stored in $ud_id (which as you can see from the form on the previous page was set as the id of the record we are updating) and to set the following fields to the specified values (which were set using the form on the previous page).

Over the last decade we've developed and refined a number of techniques that allow a database design to evolve as an application develops.

This is a very important capability for agile methodologies.

Room provides an abstraction layer over SQLite to allow fluent database access while harnessing the full power of SQLite.

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