Publisher review:Active Data Online Search Engine is a hypertextual search engine, comprising a Windows Forms crawler. Active Data Online Search Engine is a hypertextual search engine, comprising a Windows Forms crawler, indexer and management console, and an ASP.NET search engine. The system can crawl, index and store thousands of web pages, and return search results quickly. It supports most languages. The crawler can fetch web pages encoded in alphabets other than Western Latin, and the data store can accept words in any language supported by UTF-8. Search Engine uses its own data repository rather than a relational database server. Its file and data structures have been designed to provide fast access and keep operational costs as low as possible. Search Engine is powered by Microsoft .NET version 2.0.
Key benefits
Why choose Active Data Online Search Engine? -It uses purposefully designed data and file structures. It does not rely on a relational database (RDBMS). Storing an index of tens of thousands of web pages in a database server such as SQL Server has a higher TCO than storing the same information on disk. -It clearly outperforms and outscales XML and text file based search engines. Its disk seek and indexing algorithms are based on ideas used by RDBMS's. An XML or a text file based system would require the entire data set to be loaded into memory before a search could be carried out, and thus it would be limited in size. -It is fast. Generally, results are returned within 1 or 2 seconds. The data structures have been designed especially for searching vast amounts of information quickly. -It supports most alphabets and page encodings. The system can detect page encoding automatically and adjust itself. There is no need for an administrator to micromanage the crawling and indexing processes. -It provides access to the entire result set. Many solutions restrict results to the top 1000 or so pages rather than allow the user to go through the entire result set for the sake of performance. -Human-computer interaction (HCI) experts say, a search engine that finds information accurately and quickly will enhance the usability of your website.
Features
- The system is a search engine of hypertextual documents, comprising a data management Windows Forms application, which includes the crawler and indexer, and the asp.net 2.0 powered search engine.
- Search Engine is ideal for websites with thousands of web pages.
- Search Engine uses its own data store instead of a relational database server such as SQL Server or Oracle. This means it is possible to create and provide a search engine without having to purchase an expensive database licence or rent database server space.
- The data store comprises of 3 binary files, suffixed .sed.
- The processes of crawling and indexing are independent.
- The URL store is a stack or in other words a LIFO queue. This means a crawler that needs to work through several websites will complete one website before moving on to the next.
- It is possible to instruct the crawler to not follow any links, to follow links within the same domain as the current page, or to follow all links.
- Relative hyperlinks (e.g., href="../page.html") can be handled by the crawler.
- By design, the crawler will avoid meta tags, code comments, markup code, and the like - that is, all non visible text - when parsing pages.
- The crawler will ignore blocks within sets of and tags.
- The crawler will not follow the pages of a HTML frameset.
- The crawler will not follow javascript window.open() links.
- As per W3C standards, Search Engine's crawler will obey "noindex" and "nofollow" meta commands within web pages.
- Once web pages are in Search Engine's data store, they can be easily re-added to the crawling or indexing lists via the management console. As a result, a Search Engine can refresh its content on a periodic basis without the administrator having to retype all the entry-point URLs.
- The management console provides an administrator with access to the data of a Search Engine - the URL crawling list, the page indexing list, the page data store, and the search index.
- The asp.net search engine is encapsulated in an ascx control. For this reason, the search results page can be customise or embedded into an existing asp.net website.
- By default, Search Engine supports most European languages - eg, English, French, German, Swedish, Spanish, etc. The system will detect page encoding automatically and adjust itself. Searches are not case sensitive and punctuation is ignored.
- Search Engine will only return pages that contain all search keywords.
- Search Engine's page ranking system is based on the location of keyword matches.
- The system uses data paging to handle large result sets. Unlike many Internet search engines that restrict results to the top 1000 or so pages, the entire result set is accessible.
- Search results feature text preview and keyword highlighting. The results can be configured via appsettings to either return highlighted texts or the first few words.
- Keywords within page titles are also highlighted.
- The length of page titles (and URLs) in the search results can be restricted.
- Searches can be easily logged so that it is possible to track what people are searching for.
- In general, Search Engine can query the data store and return results in around 1 second. This is made possible by the proprietary data store and index. The data and file structures of the system have been designed from the ground up specifically for the purpose of searching.
Active Data Online Search Engine 4.3 is a ASP.NET script for Search Engines scripts design by Active Data Online Pty Ltd.
It runs on following operating system: Windows.
Operating system:Windows
Active Data Online Search Engine 4.3 script details 
