XML (eXtensible Markup Language) is a tool designed for storage and transportation of data; it is a software as well as a hardware-independent tool. XML is a self-descriptive tool very similar to HTML. But there are no predefined tags in XML like HTML. There is no unique function that XML performs, and it is just a facility for information to be wrapped in tags and stored and transported. The main goal behind designing XML was to carry data and focus on what the data is. The tags in XML are invented by the user as and when needed.
XML is very extensible, and even with the addition of new data, most XML applications work smoothly. XML simplifies data sharing, data transport, platform changes and data availability for its users; that is why the loss of data due to incompatibility of the device is completely omitted because of XML. The data from XML is very simple and can be read on any device such as a computer, news feed, voice machine, etc. With the use of XML, upgrading new browsers, new applications, and new operating systems becomes extremely convenient.
Learn more about XML
XML has several applications in the development world. It has been used in the development of hundreds of web applications. Many aspects of web application development use XML as the programming base. XML is widely used for the separation of data from presentation. It is not bound to carry information in the format it has to be displayed. The data is rather converted to simple XML language, which can be further modified to be presented as per the developer's will. That is why there is a complete separation between the presentation and the data in XML.
XML uses a tree-like structure to save the data. This tree structure has roots from when data is saved, and it grows out branches and leaves, to which the data is added on arrival. All the documents that enter XML are formed as element trees. All element trees have sub-elements which are also called child elements. The sub-elements are represented as parents, children, and siblings. This shows the exact relationship as described by those words, i.e., parents have children (which lie below them on the tree) and children have siblings (which lie on the same level as them on the tree).
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Important features of XML
1. XML Encryption
XML Encryption (XML-Enc) is regulated by the worldwide web (WWW). This feature is used for the promotion of data security. Whether XML is maintaining the global standards is constantly evaluated by the World Wide Web.
2. Secure data transfers
XML provides excellent security for data transfer. To ensure secure transactions XML uses features such as XML Digital Signature, XML Encryption, XML Key Management, Security Assertion Markup Language (SAM), etc.
3. Universally accepted language
XML uses a very basic language for interactions. XML can be used in web applications and also desktop applications. It can be used to communicate between any systems such as news feeds, handheld devices, automated voice messages, etc.
4. Base for developing new languages
XML can be used as a base language for developing new languages. It is very simple and easy to understand and use language. That is why it can be used as a base. Some of the languages developed by using XML language as the base are XHTML, RSS, WML, SML and WAP.
5. Immune to changes in technology
XML functions work smoothly, irrespective of the technology used around them. It can be used as a bridge between two different technologies. The simplicity of XML makes it adapt to any new technologies very quickly.
Roles and responsibilities an XML developer
- To optimize web-based document sharing processes
- To transmit programs across networks
- To define XML rules for document sharing
- To provide back-end support
- To demonstrate extensive knowledge of programming languages such as SQL, Java, HTML, and CSS
- To have API experience
- To consult with managers and analyze processes to determine XML needs
- To write XML commands
- To reduce data redundancy by allowing content management systems to store all document formats
- Tp apply relevant sets of rules to enable B2B data exchanges
- To enable WML based applications to exchange data on mobile devices
- To run diagnostic tests
- To resolve errors
- To write Java API applications
- To develop and manage XML transformations
- To execute Agile development tools
- To document XML development processes
- To prepare progress reports
- To keep informed of advancements in XML development
- To have extensive programming experience in developing data-driven web applications
- To align back-end processes with end-user functionality
- To have exceptional analytical thinking
- To demonstrate problem-solving skills
- To have excellent collaboration and communication abilities
- To have great organizational skills
- To have efficient time management skills
- To write applications integrating Documentum Java API
- To develop XML transformations
- To maintain and manage XML schemas
- To execute queries, search with MarkLogic and XQuery
Skuad can help you hire certified and experienced XML Developers from all over the world based on your hiring requirements, be it freelance, full-time, or contract.
Salary structure of an XML developer
An XML developer has great demand in the market. Many technologies use XML as the base; that is why the demand is significant. The XML developers are given an average annual salary of US $68,590. This is a universal average, but region-specific salaries can vary. For example, in the United States, XML developers are offered an annual package of an average US $72,716.44. But in India, the average annual salary of an XML developer is US $2,307.27 (₹ 171,528). They get a monthly salary in the range of US $147.96 (₹ 11,000) to US $309.38 (₹ 23,000) and their annual salary structure lies between US $1,775.57 (₹ 132,000) to US $3,712.55 (₹ 276,000).
Freelancing and Contractual basis work
Freelancing is taking up projects from clients without accepting to be an employee of the client. Contractual basis work is obtaining contracts from clients for a limited amount of work. Both these types of work go hand in hand. You get to choose your working hours and how much you want to work. The incentives offered are quite attractive. Freelancers are free to set their own rates. In India, a freelance XML developer charges US $9.66 (₹ 718) per hour. But freelancers charge US $45.12 per hour in the United States. The charges greatly depend on your location and the demand for your skills in that location. In similar terms, a freelance XML developer in the United Kingdom earns on the average US $796.42 (£ 575) per day. Freelancing and contractual basis work are excellent methods for building a robust portfolio. Many beginners start their careers with freelancing and work their way to a desirable full-time opportunity. With freelancing, you gain experience to work on real-life problems and create attractive and satisfactory solutions.
XML certification courses are provided by xmlmaster.org. This institute provides two XML certification courses with basic and advanced levels. Those are XML Master Basic and XML Master Professional. XML Master Professional has further two types of certification courses viz. XML Master Professional Application Developer and XML Master Professional Database Administrator. The XML Master Professional Application Developer is for development professionals, whereas the XML Master Professional Database Administrator is for XML database professionals. All these courses have an excellent syllabus. These are one time courses whose certificates do not need updates. Getting certified in XML is a turning point for many skilled individuals. You can pursue a professional career as an XML developer after obtaining your XML certification. The certification courses are available at affordable prices. It is a very smart investment for your career since it opens numerous opportunities for you. The XML certification courses are generally available in the English language.
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