Database Retrieval System Search Capabilities Computer Science

Essay add: 11-01-2016, 17:14   /   Views: 5

A database is a collection of information organized in a standard format to allow for easy search and retrieval. Subject database is electronic resource for the particular subject area and indexing by relevance fields. It is searchable, and well designed. Subject databases focus on a subject area including literature, biography, health, business, history, and science and technology in that discipline. It is not the same from web search information. The web search is free to browse and contains information posted by whoever chooses to create a web site and other media that are freely available from the Web but it is not well organized, not structured index like commercial published material. However, admit to subject database is with subscription but the users get a lot of value for charges. Most of the subject databases can search in universities library pages below the database link. These all subject databases are browsing the alphabetical list. In our assignment, we evaluated search capabilities of three databases, JSTOR- online database which provides information for two core fields, economics and history, ScienceDirect Online- full-text scientific database offering journals, book series, books and reference works and Web of Science- designed for providing access to multiple databases, cross-discipline research, and in-depth exploration of specialized subfields within an academic or scientific discipline via web links available in database sections under Nanyang Technological University (NTU) library.

Enhancement in Hybrid Vehicles using Data acquisition, and Fuzzy Logic

JSTOR was conceptualized by William G. Bowen, President of The Andrew W. Mellon Foundation, to help university and college libraries challenged to provide enough space for an ever-growing amount of published scholarship. JSTOR is non-profit organization and also one of the world's most trusted sources for academic content with more than a thousand academic journals and over 1 million images, letters, and other primary sources. JSTOR database contained over 165,000 individual journal issues, totally over 23 million pages of text across over 40 disciplines. JSTOR is available at more than 6,000 participating institutions. JSTOR include titles from the year 1665 to until now. It can be accessed directly from the home page by authorized users and bounded by discipline.

ScienceDirect Online

ScienceDirect, part of Elsevier, publishes over 2,000 journals and close to 20,000 books and major reference works. ScienceDirect Online database is a full-text scientific database. User can buy the books and journals from the ScienceDirect Online. The interface of ScienceDirect Online is a user friendly interface. It has three type of searching, Quick Search, Advanced Search and Expert Search. One thing, SciencDirect Online different from other databases is ScienceDirect Online allows UTF-8 (8-bit Unicode Transformation Format) including non-Roman and accented character for searching.

Web of Science

Web of Science is an online academic database provided by Thomson Reuters. It is designed for providing access to multiple databases which includes information gathered from thousands of scholarly journals, books, book series, reports, conferences. Web of Science provides administrators, researchers, faculty, and students with quick and powerful access to the world's leading citation databases.  Authoritative, multidisciplinary content covers over 10,000 of the highest impact journals worldwide, including Open Access journals and over 110,000 conference proceedings.  User can also export their search result to their EndNote library. Web of Science provides wide range of information across the various databases with designated searching methods to get the user satisfied result.

Evaluation Criteria3.1 Interface and AccessibilityJSTORScienceDirect OnlineWeb of Science1.What do the interface look like? Is it cluttered or well-designed?

The screen is really simple and well-structured. It clearly shows the search box and limitations fields with simple color scheme in the Home Page.

Although the interface design is cluttered in a sense that the color combination is bright, it is well designed and we can easily browse the interface. In main menu, we can clearly visible Home, Browse, Search, My settings, My alerts and also Help included.

Sample and Classic style buttons, text fields and check boxes make user to use easily and more familiar with the system.

2.Are there clear, well-defined links to different parts of the database? Are they easily navigable (to move from one section to another and back to the homepage)?

Results are easily accessible by clicking on the desired link and users can jump throughout the database with clear description of links to related items.

It is very clear and can easily surf from one session to another session and we can also easily back again to Home Page by clicking Home tab. It has also the link of Articles and Images and so we can see these related things by clicking on them.

It can easily choose desire databases in the "Limits and Setting" which are indicated at the bottom of the page even using Sample Search. Moreover, this database can also easily go or go back by clicking respective tabs or by using go back button from browser.

3.Is there a clear indication of authority for the database?

Indication of Authority for the database is clearly mentioned at the bottom of the Home Page.

Information Authority of organization is clearly stated at the bottom of each page.

Authority Information is clearly indicated under "Acceptable Use Policy" page which is located at the bottom of the page.

4.What are the number and type of sources covered (journals, reports, etc) in the database? Is a list of sources given?

It focuses on journal literature including monographs and other materials on the scholarly basis. New titles and resources are added regularly on the JSTOR covering up to 1866 titles currently. Each journal in JSTOR starts from volume one. The source and detail information of the journals can be seen with the title of the journals.

This database is grouped in four main sections: Physical Sciences and Engineering, Life Sciences, Health Sciences, and Social Sciences and Humanities. We can search journals, book series, books and reference works science include with full text or abstract. It has more than 2,500 peer-reviewed journals and more than 11,000 books.

Web of Science covers government publications, patents, sciences and social sciences articles from respective citation databases, Science Citation Index Expanded, Social Sciences Citation Index, Arts & humanities Citation Index, Conference proceedings Citation Index- Science and Conference Proceedings Citation Index- Social Science & Humanities.

5.Time coverage - documents from which years are available?

Full-text articles on JSTOR cover from the year 1665 until now.

All journals and books from 1823 to the present year.

Web of Science has provided Science Citation Index Expanded (SCI-Expanded) database covers from present to 1899, Social Sciences Citation Index (SSCI) database provide recent year to 1898, Arts & Humanities Citation Index (A&HCI) database covers from 1975 to until now, Conference Proceedings Citation Index (CPCI) database provides from present to 1991.

6.Update frequency - how often are documents uploaded into the database?

The database is updated on periodically basics.

The content in the ScienceDirect Online Database updates daily as it has linked with online subscriptions and advertisement.

SCI-Expanded updates 19000 new records per week. SSCI updates round about 2900 new records per week. A&HCI updates 2300 records per week and CPCI averages 385000 records added by each year.

7.Is there a convenient guide for moving about the Database (Adequate information stated in the Help file)?

Help file is the useful step to get start with JSTOR database. The detail information about accessing each search strategies available within this database is described by the specific link.

"Getting Started" is accessible by clicking Help tab on ScienceDirect online Database that providing clear and complete guide to all types of users ranging from novice to advanced level.

Sample Help file of this database makes user to quickly understand the ways to use its system and also easily to find the Help tab as the interface design is standardize.

3.2 Search functions and CapabilitiesJSTORScienceDirect OnlineWeb of Science1.Search functions - what search functions are available (Boolean and proximity operators,Truncations, Phrase searching)?

- The Boolean operators provided by JSTOR are AND (&&, & and proceeding + in front of words that want to search.), OR (||), NOT (- is used before the word).

- In Truncation, similar words for any order is denoted by ~ symbol, single character is used by "?" and for different spelling "*" can apply.

- To define the specified distance between the search terms, Proximity operator (Near) is used.

-We can search with Boolean operators: AND, OR, NOT, AND NOT.

-We can also search with Proximity operators: W/n, PRE/n.

-We can search with Wildcards. For instance, h*r*t finds "harvest", "homograft", "hypervalent", and others.

-For Phrase searching, we need to enfold the term in brackets ({}) and double quotation marks ("").

-In Advanced Search, we can use four Boolean operators: AND, OR, NOT, SAME.

-We can also use Wildcards for example, computer* finds computer information, computer software or computer engineering. Colo$r find color or colour. Computer? finds computers or computer.

-For Phrase searching, we have to do enclose the phrase in quotation marks. For instance, "Information retrieval system".

2.Search levels - are there different search capabilities, e.g. basic, advanced, command searching?

Search levels are categorized into Basic, Advanced Search and Citation Locator.

-Basic Search is useful for general searches to get an extensive overview of a topic. It can search the full text of all journals. It can be got at directly from the home page by authorized users and bounded by discipline.

-Advanced Search is useful for more specific searching across the disciplines and/or publication titles. It has five access points such as full-text, author, item title, abstract and caption.

-Citation Locator is useful for locating specific item titles by an author or ISSN/E-ISSN. It can be fixed by item titles.

It offers Quick Search, Advanced Search and Expert Search.

-In Quick Search, you can find for articles, journal and book titles, or images.

-In Advanced Search, you can search for all sources, journals, books or reference works.

-In Expert Search, we can create more complex, sophisticated searches to search all sources, journals, books or reference works.

Search functions except Quick Search available such as save search, search history, search within results and recall search.

We can choose three main different search capabilities plus one additional search feature.

-Search which is designed to search simply by keying topic or author or publication name.

-Cited Reference Search is design to search cited article by keying cited author or cited work or cited year.

-In Advanced Search, we can use character tags, Boolean operators, parentheses, and set references to create our query.

-Additional search feature or Search History has ability to make combination search or refine search to get better result from our previous search results.

3.How search strategies are formulated - multi or a single research box?

Provide single box and discipline to choose in the Basic Search screen and standardized with multiple search boxes in other search functions to obtain specific search results.

Multi research box are supported.

Multi research box are supported.

4.Is there any limit field available? Is it easy to use these limit fields?

To limit the searched results, Date, Language and Item Fields are useful in JSTOR.

Many limit fields are available in Advanced Search and Expert Search such as Source, Subject, Document Type, Date Range.

Yes, it provides limit fields such as Timespam and selection of Citation Databases.

5.Can search result be refined?

The option "Search within these results" allows users to enhance previous search with more abstract information. Moreover, user can adjust their search results by clicking modify search button.

Search result can be refined in this Database. In this feature, we can see our searched results in a variety of categories. It allows our result lists to filter by publication type, image type, source title, topic, or year.

Search results can be refined by limiting Subject Areas, Document Types, Authors, Source Titles, Publication Years, Conference titles, Institutions, Funding Agencies, Languages and Countries or Territories.

6.Is a search history option available? Can this be edited or modified to facilitate a new search? Can search results be saved?

The facility of search history can be accessed by saving the searched keyword in the SAVE SEARCH beta .It can also be retrieved again by clicking Run button to review , to make edition for further search in need and to delete when unnecessary. These features can be accessed only if the user has created MyJSTOR account.

Search history option is available. We can edit and delete our searched results by clicking on edit and delete buttons to modify the result by clicking Recall search. Moreover, we can also clear and print in search history easily. But important thing is you must be member of ScienceDirect Online Database. Moreover, we can also combine searched results with Boolean operators: AND, OR.

Search history can be saved and also make combination searched results by using Boolean operators. Besides, we can also edit and delete our results accordingly.

7.Can search alerts be created?

Defining the search alert can't be performed in JSTOR.

It offers Search alerts, Topic alerts and Volume/Issue alerts for our favorite journals and books. For example we can make new alerts for our required items and database notifies us by email when new articles relating to a specific topic are available.

We can create search alerts in My Citation Alerts but we have to register to get fully access.

8.Is there a thesaurus available? How easy it is to consult and use the thesaurus?

Thesaurus is not provided.

There is no thesaurus available.

Thesaurus is not supported.

9.Is index browsing available? How many indexes can be browsed?

Index browsing in JSTOR is covered in Discipline, Title and Publisher options. The contents of these options are arranged by alphabetical display.

Index browsing is available in this database. We can browse by Journals/Books Alphabetically by title, Journals/Books by Subject and Favorite Journals/Books.

Index browsing feature can be used by clicking -"Access the Search Aid" button. We can browse indexes by clicking on a letter or keying a few letters to browse alphabetically. We can browse by Author, Publication Name, Group Author, Language, and Document Type.

10.Is a search help/tips/tutorial/FAQ provided? Is the provided information adequate?

JSTOR provides all of these features to get fully access to familiarize with its database.

Every search pages have Search tips. Help menu is available to explain details of information how to use database to all types of users ranging from novice to advanced level. Moreover, there are also Tutorials and FAQ sessions but FAQ is not enough for user. However, we can ask directly to ScienceDirect administration by Live Chat.

We can search useful topics in Help tab. Otherwise; we can go to Web of Science website to get more help such as Live Training, Recorded Training and Download Materials.

11.Other search capabilities

- There is no RSS feeds provider in JSTOR.

- JSTOR uses the metadata fields to narrow the search results and specified as "au" for author, "jo" for journal name etc. For example, the usage for finding the article wrote by Smith can be viewed as "au: smith". This is also called field abbreviations.

-Times of importance of each term can be retrieved by caret symbol"^".

-ScienceDirect provides RSS feeds means that we can get into the RSS feeds by clicking orange RSS logo on the browser. It allows us to see when new articles, citations or search results are available on database. The user can request RSS feeds for Volumes and Issues, Searches, Citations and Topics but to use RSS feeds we will need RSS reader.

- The user can search UTF-8 characters directly in the search box including non-roman and accented characters. For example: the Greek letter Ω, enter Ω or omega.

- Alternative words and abbreviations search can get in this database.

- External search sources are available such as command buttons, check boxes, and scroll bars.

-Moreover, Top 25 Hottest Articles are available. The Top 25 is a free service which provides lists of most read articles - counted by article downloads on database. We can choose to view Top 25 lists by journal (from among more than 2,000 titles), or by subject (from 24 core subject areas). From these Top 25 results we can click and go straight to read the full article depending on our access rights.

-It provides "Marked List" which can bookmark our search results. We just need to click respective check boxes that we want to save.

-We can use My EndNote Web feature if we have registered.

-"Analyze" feature provides to analyze our searched result by ranked order.

-The "Citation Report" feature provides combined citation figures for a set of search results such as:

- the total number of times for all items have been cited,

- the overall counts of an item has been cited,

- the total number of times an item has been cited each year,

-the average number of times an item has been cited in a year.

3.3 Display and OutputJUSTORScienceDirect OnlineWeb of Science1.What sort of display options are available - brief or full records?

The searched results are displayed in abstract type and user can follow up study in full-text articles. In addition, it is allowed to preview the overall contents of articles in page thumbnails and user can jump the desired page. The retrieval of only image content articles is available in this database.

Full text, video, audio, images, files and dataset are available. But if the user want to see only abstract, then he/she can choose abstract only check box.

Full text and brief are available.

2.What formats are available for full-text documents - html, pdf, etc.?

Full-text articles can be viewed both in PDF format and in page by page scan.

The user can get full records with PDF, XML and HTML format. Then we can find related document by clicking on hyperlink.

We can download PDF and HTML format for full-text document.

3.Can documents be saved, printed or emailed?

Each retrieved journals' attributes can be saved and emailed as citation along with the stored date. Printing of selected articles in PDF format can be obtained through new window.

Yes. Documents can be saved, printed and emailed directly.

We can save, print and email document.

4.Can documents be printed directly? Are different print options available?

User can print directly by clicking the specific document PDF file.

User can print directly by clicking the specific document PDF file.

User can print directly abstract information of searched result by clicking Print button. On the other hand, he/she can also print full text documents from PDF file.

5.Is sorting or relevance ranking available?

The results of searched journals can be sorted in accordance with the relevance or newest to oldest or oldest to newest field plus desired number of journals on a display page.

All the documents are sorted by Relevance and Date which is from newest to oldest date.

User can choose their desire sorting options such as sort by Latest Date, Time Cited, Relevance, First Author, Source Title, Publication Year and Conference Title.

6.Other display & output features

-The accessible articles in the database are described by green mark and unauthorized access throughout the internal database is shown in yellow mark.

-The keyword in search pages is highlighted with yellow color to indicate what the user wants.

-In this database, the user can view tutorial by many languages such as English, France, Deutsch, Spain, Portuguese, and Chinese and so on.

-It provides link for Adobe Acrobat Reader.

-It can show 100 records per page.

-Error message show with red color when the user searches are not structured.

-Search keywords are in highlight with yellow color on the whole articles so user can easily denote whether it is relevance or not.

-It can show maximum 50 records per page.

-If the user query is not successful, then the error message will be prompted and provided some hits to get idea to refine search.

-Search keywords are in yellow color and bold.

-The database provides both Chinese and English user interface.

Conclusion

After analyzing the features of the three databases we found that all these databases have their advantages and disadvantages. They all have different interface designs, search techniques and different display and output options. Although they have different features, all databases have similar search functions like as simple search and advanced search. Besides, they all can search their requirements with common operators such as Boolean and Truncation. All these databases are well designed and so they can give effective information search by the user. Among these databases, JSTOR is the best to help the scholarly journal community take advantage of advances in information technologies. JSTOR has demo video feature that can guide users in searching efficiently, ScienceDirect Online has various search options and many science resource and can get RSS feeds which means it allows to see when new articles, citations or search results are available on database and Web of Science is provided access to multiple databases, cross-discipline research, and in-depth exploration of specialized subfields within an academic or scientific discipline via web links available in database sections. However, one thing is Customers must be members of these databases to get full access like as downloading and printing facilities, saving searched histories, making alerts. These three databases have quick response to the user request. So above all evaluation factors, all databases can give many advantages according to their specific subjects.

Article name: Database Retrieval System Search Capabilities Computer Science essay, research paper, dissertation