Exercises, examples and other material relating to training module H313. This module is presented on
Private Courses and
Specially Run Courses only
Articles and tips on this subject | updated |
4059 | Curl and curling from PHP The Curl library collects a resource in a non-interactive way from a service... libcurl is a free and easy-to-use client-side URL transfer library, supporting DICT, FILE, FTP, FTPS, Gopher, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMTP, SMTPS, Telnet and TFTP. libcurl ... | 2013-04-13 |
4055 | Using web services to access you data - JSON and RESTful services Rather than build database access directly into your application, you can write much more portable and maintainable code using a service / web service in which you embed the database access - or whatever else you're using for your backend data.
Web services are typically accessed through HTTP or HTTPS ... | 2013-04-06 |
4053 | Frameworks - learning through exploring and understanding data sources When a newcomer joins a team that's been working on an existing large project for years, (s)he often finds that so much work has been done, and such extra layers of abstraction added on top of the basic tools, that it's very difficult to get into the project. The problem is often compounded by development ... | 2013-03-31 |
Background information
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Topics covered in this module
Separation of the data layer from the presentation layer.
In order to keep the data apart from the display and update logic, major web applications are often written using a page presentation layer of code which then accesses services behind that code. The services will use XML, JSON, CSV or another data format to feen the page presentation layer, which may itself be further dividied into router - model - view - controller elemenst. Database access (if required) will often be within the service layer, thus ensuring that the presentatin layer isn't dependent on any one particular technology / database, and giving cache and scalability improvements.
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