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What Are The Key Features Of Drupal?
Drupal core has two key features that assist with the integration of rich media, the Upload module and embedding. The Upload module allows users to attach different types of files to node types of your choosing. This feature allows for very basic integration with media files. There are two limitations that you will deal with when using the upload module. The size of file uploads may be limited by your web host which could limit what types of media you can upload to the site. If you are able to upload the file you want the upload function does not provide any post upload processing or embed the media within your posts.
Drupal core also allows you to embed media within nodes that is hosted on other websites. So if you have photos hosted on Flickr or videos hosted on YouTube you can paste the provided embed code into your posts. And you are also free to create a link to the original location of the media in your post. It is important to note that if you wish to embed media from other sites you must have the "Full HTML" input format selected. The standard "Filtered HTML" input format strips out the embed tags for security reasons.
• Question 12. What Is Taxonomy In Drupal?
Drupal comes with a built in taxonomy system. The taxonomy system allows you to categorize the nodes on your site. The taxonomy system allows you to define vocabularies allow you to organize your terms into groups. Each term is essentially a category. There is no limit to the number of vocabularies you can create. There is also no limit to the number of terms that you can include in each vocabulary. Your vocabulary can also have free tagging. So instead of entering specific terms ahead of time users may enter tags freely at the time the post is written and those tags automatically become terms in that vocabulary. This taxonomy system makes Drupal very flexible and very powerful because you can use your categories and terms to display the content on your site in a variety of different ways. For example, a contributed module called Tagadelic allows you to display categories as a tag cloud. You can also use your site categories to generate custom views and RSS feeds.
• Question 13. What Are Hooks In Drupal ?
Hooks in Drupal allows modules to interact with the Drupal core. Drupal’s module system is based on the concept of “hooks”. A hook is a PHP function that is named foo_bar(), where “foo” is the name of the module and “bar” is the name of the hook. Each hook has a defined set of parameters and a specified result type. To extend Drupal, a module need simply implement a hook. When Drupal wishes to allow intervention from modules, it determines which modules implement a hook and calls that hook in all enabled modules that implement it.
• Question 14. Drupal Can Run On Command Line?
Yes, you can use drush – drush is a command line shell and Unix scripting interface for Drupal
• Question 15. How To Enable Clean Urls In Drupal ?
The standard Drupal installation contains a sample .htaccess file which supports clean URLs. It is easy to miss copying this file, because of the leading “dot”. So before trying to enable Clean URLs, make sure this file exists in your Drupal installation.
• Question 16. What Is Cms?
Content management system (CMS) is a collection of procedures used to manage work flow in a collaborative environment. These procedures can be manual or computer-based. The procedures are designed to allow large number of people to contribute and share stored data Control access to data, based on user roles. Reduce repetitive duplicate input Improve the ease of report writing Improve communication between users. In a CMS, data can be defined as almost anything – documents, movies, pictures, phone numbers, etc. CMSs are frequently used for storing, controlling, revising, semantically enriching, and publishing documentation. Content that is controlled is industry-specific
• Question 17. What Is A Web Content Management System?
Answer : A Web content management system is content management system software, implemented as a Web application, for creating and managing HTML content. It is used to manage and control a large dynamic collection of Web material. A WCMS facilitates content creation, content control, editing, and essential Web maintenance functions. The software provides authoring tools designed to allow users with little knowledge of programming languages or markup languages to create and manage content with relative ease. Most systems use a database to store content, metadata, or artifacts that might be needed by the system. Content is frequently, but not universally, stored as XML, to facilitate reuse and enable flexible presentation options. Most systems use server side caching boosting performance. This works best when the WCMS is not changed often but visits happen on a regular basis. Administration is typically done through browser-based interfaces, but some systems require the use of a fat client.
• Question 18. Which Are Commonly Used Php Based Cmss ?
Drupal, Joomla, Wordpress, TYPO3.
• Question 19. How To Interact With Drupal Search System ?
There are three ways to interact with the search system: Specifically for searching nodes, you can implement nodeapi(‘update index’) and nodeapi(‘search result’). However, note that the search system already indexes all visible output of a node, i.e. everything displayed normally by hook_view() and hook_nodeapi(‘view’). This is usually sufficient. You should only use this mechanism if you want additional, non-visible data to be indexed. Implement hook_search(). This will create a search tab for your module on the /search page with a simple keyword search form. You may optionally implement hook_search_item() to customize the display of your results. Implement hook_update_index(). This allows your module to use Drupal’s HTML indexing mechanism for searching full text efficiently. If your module needs to provide a more complicated search form, then you need to implement it yourself without hook_search(). In that case, you should define it as a local task (tab) under the /search page so that users can easily find it.
• Question 20. Explain User, Permission, Role In Drupal?
Every visitor to your site, whether they have an account and log in or visit the site anonymously, is considered a user to Drupal. Each user has a numeric user ID, and non-anonymous users also have a user name and an email address. Other information can also be associated with users by modules; for instance, if you use the core Profile module, you can define user profile fields to be associated with each user. Anonymous users have a user ID of zero (0). The user with user ID one (1), which is the user account you create when you install Drupal, is special: that user has permission to do absolutely everything on the site. Other users on your site can be assigned permissions via roles. To do this, you first need to create a role, which you might call “Content editor” or “Member”. Next, you will assign permissions to that role, to tell Drupal what that role can and can’t do on the site. Finally, you will grant certain users on your site your new role, which will mean that when those users are logged in, Drupal will let them do the actions you gave that role permission to do. You can also assign permissions for the special built-in roles of “anonymous user” and “authenticated user”. Drupal permissions are quite flexible — you are allowed to assign permission for any task to any role, depending on the needs of your site.
• Question 21. Explain Region, Block, Menu In Drupal?
Pages on your Drupal site are laid out in regions, which can include the header, footer, sidebars, and main content section; your theme may define additional regions. Blocks are discrete chunks of information that are displayed in the regions of your site’s pages. Blocks can take the form of menus, the output from modules, or dynamic and static chunks of information that you’ve created yourself. There are three standard menus in Drupal: Primary Links, Secondary Links, and Navigation. Primary and Secondary links are built by site administrators, and displayed automatically in the page header of many themes. Navigation is the catch-all menu that contains your administration menus, as well as links supplied by modules on your site. You can also create your own custom menus, and display them by enabling their blocks. You can customise menus in several ways, such as reordering menu items by setting their “weight” or simply dragging into place, renaming menu items, and changing the link title. You can move a menu item into a different menu by editing the Parent property of the menu item. You can also add custom menu items to a menu, from the Add menu item tab of the Menu administration screen. To create a menu item, you will need to provide the path to the content.
• Question 22. Explain The Function And Working Of Dashboard Module ?
The Dashboard module provides a Dashboard page in the administration menu. The intention of the Dashboard page is to give administrators a quick overview of important information on the website.
• Question 23. What Is A Patch?
A patch is a file that consists of a list of differences between one set of files and another. All code changes, additions, or deletions to Drupal core and contributed modules/themes between developers are done through patches. The differences are presented in a structured, standard way, which means that a program (also named patch) can be used to apply the changes to another copy of the original file.
• Question 24. What Is Node In Drupal?
A node in Drupal is the generic term for a piece of content on your web site. (Note that the choice of the word “node” is not meant in the mathematical sense as part of a network.) Some examples of nodes:
• Pages in books
• Discussion topics in forums
• Entries in blogs
• News article stories
Each node on your site has a Content Type. It also has a Node ID, a Title, a creation date, an author (a user on the site), a Body (which may be ignored/omitted for some content types), and some other properties. By using modules such as the contributed Content Construction Kit (CCK) module, the core Taxonomy module, and the contributed Location module, you can add fields and other properties to your nodes.
• Question 25. What Is Comment In Drupal?
Comments are another type of content you can have on your site (if you have enabled the core Comment module). Each comment is a typical small piece of content that a user submits, attached to a particular node. For example, each piece of discussion attached to a particular forum topic node is a comment.
• Question 26. How Database System Of Drupal Works ?
Drupal stores information in a database; each type of information has its own database table. For instance, the basic information about the nodes of your site are stored in the Node table, and if you use the CCK module to add fields to your nodes, the field information is stored in separate tables. Comments and Users also have their own database tables, and roles, permissions, and other settings are also stored in database tables.
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