Databases Searching
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MLIS Course code 5501- Database,library database- basics for students

MLIS Course code 5501- Database,library database- basics for students

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Databases Searching Databases Searching Presentation Transcript

  • DATABASES AND SEARCHING INTRODUCTION TO LIBRARY & INFORMATION SCIENCES (5501) WORKSHOP SPRING 2013 By: Huma Malik Librarian, Preston University, Islamabad
  • Definition Format of Databases Advantages of Database Disadvantages of Database Types of Database What is a Library Database? What is Database Searching? Types of Search CONTENTS
  •  A database is an organized collection of data.  A database is a collection of information organized to provide efficient retrieval. DEFINITION
  •  The collected information could be in any number of formats - electronic, - statistical - printed, - audio - graphic, - combinations  There are physical (paper/print) and electronic databases. FORMAT OF DATABASES
  •  A database could be –as simple as an alphabetical arrangement of names in an address book or –as complex as a database that provides information in a combination of formats.  Examples: – phone book – address book FORMATS OF DATABASES
  •  Reduced data redundancy  Reduced updating errors and increased consistency  Greater data integrity and independence from applications programs  Improved data access to users  Improved data security  Reduced data entry, storage, and retrieval costs  Facilitated development of new applications program ADVANTAGES OF DATABASE
  •  Database systems are complex, difficult, and time-consuming to design  High cost of required for hardware and software  Damage to database affects all applications programs  High conversion costs in moving form a file- based system to a database system  Initial training required for all programmers and users DISADVANTAGES OF DATABASE
  • Bibliographic databases  provide a descriptive record of an item,  but the item itself is not provided in the database.  Information about the item is provided, including such things as author, title, subject, publisher, etc.  Sometimes a short summary or abstract of the item is also provided.  Examples: MEDLINE, AGRICOLA, ERIC TYPES OF DATABASE
  • Full-text database  Provides the full-text of a publication.  It may collect only – image information (EBSCOhost image collection), – audio information (MP3 or wav files), or – a combination of any of the above types. Meta-databases  Databases that allow one to search for content that is indexed by other databases.
  •  Library databases contain information from published works. Examples: – Magazine and newspaper articles, – encyclopedias and – other reference books.  Library databases are searchable by - Keywords, - Subject, - Author, - Magazine Title, - Date, etc. WHAT IS A LIBRARY DATABASE?
  •  Library databases provide citation information. – Author – Title of Article – Publication (Title of Magazine, Newspaper, or Reference Book) – Publisher – Date of Publication  Library databases often contain full-text articles. – You can print or email an entire article. WHAT IS A LIBRARY DATABASE?
  •  There are different kinds of library databases – For specific topics. Examples:  Biography Resource Center  New Book of Popular Science – For general topics. Examples:  ProQuest  World Book Online WHAT IS A LIBRARY DATABASE?
  • Database Searching is  Using a computer system to find required piece of information.  Information may be – Full-text, – Bibliographic and/or – Meta-data (i.e. refereeing to other databases) WHAT IS DATABASE SEARCHING?
  • Search is of two types: 1. Keyword / Basic Search 2. Advance Search TYPES OF SEARCH
  • Keyword / Basic Search  Searches one field  Useful to determine how big the collection of articles related to the topic is.  It is also helpful when doing a known item search, for example when the exact title is known. TYPES OF SEARCH
  • Keyword / Basic Search Box TYPES OF SEARCH
  • Advance Search  More refined search.  Multiple search terms in multiple fields can be searched for simultaneously.  Used when the collection of interested articles is large and needs to be narrowed.  Useful when information from more than one field would help in locating items of interest TYPES OF SEARCH
  • Advance Search Box TYPES OF SEARCH
  • THANK YOU By: Huma Malik Librarian, Preston University, Islamabad MLIS-AIOU SPRING 2013 WORKSHOP