DATA BASE & ITS USES IN LIBRARY

By: Tahira SultanaI.T IN BUSINESSINSTITUTE OF HEALTH MANAGEMENT,DUHS

Data base

A database is an organized collection of data It is the collection of schemas, tables, queries, reports, views and other objects

History

1960s, navigational DBMS 1970s, relational DBMS Integrated approach Late 1970s, SQL DBMS 1980s, on the desktop 1990s, object-oriented 2000s, NoSQL and NewSQL

Types of Database

Document oriented databaseEmbedded databaseGraph databaseHypertext databaseOperational databaseDistributed DatabaseFlat file

Types of Database

Document oriented database Embedded database

Types of Database

Graph Database Hypertext database

Types of Database

OPERATIONAL DATABASE

DISTRIBUTED DATABASE

Types of Database

FLAT-FILE DATABASE

DATABASE SYSTEM AND IT'S COMPONENTS

A database system is a computer based record keeping System whose overall purpose is to record and maintain information that is relevant to the organization necessary for making decisions. E.g:

• Banking System and ATM's machines.

• Stock Trading Systems.

• Flight Reservation Systems.

• Computerized Library Systems.

• Super Market Product Inventory System.

• Credit Card/Credit Limit Check System

COMPONENTS OF DATABASE SYSTEMA database system is composed of four components;

• Data • Hardware • Software • Users

1. Data - It is a very important component of the database system. Most of the organizations generate, store and process 1arge amount of data. The data acts a bridge between the machine parts i.e. hardware and software and the users which directly access it or access it through some application programs.

2. Data may be of different types.

3. User Data - It consists of a table(s) of data called Relation(s) where Column(s) are called fields of attributes and rows are called Records for tables. A Relation must be structured properly.

4. Metadata - A description of the structure of the database is known as Metadata. It basically means "data about data". System Tables store the Metadata which includes. - Number of Tables and Table Names - Number of fields and field Names - Primary Key Fields

3 Application Metadata

2. Hardware - The hardware consists of the secondary storage devices such as magnetic disks (hard disk, zip disk, floppy disks), optical disks (CD-ROM), magnetic tapes etc. on which data is stored together with the Input/Output devices (mouse, keyboard, printers), processors, main memory etc. which are used for storing and retrieving the data in a fast and efficient manner. Since database can range from those of a single user with a desktop computer to those on mainframe computers with thousand of users, therefore proper care should be taken for choosing appropriate hardware devices for a required database. 3. Software - The Software part consists of DBMS which acts as a bridge between the user and the database or in other words, software that interacts with the users, application programs, and database and files system of a particular storage media (hard disk, magnetic tapes etc.) to insert, update, delete and retrieve data. For performing these operations such as insertion, deletion and updation we can either use the Query Languages like SQL, QUEL, Gupta SQL or application software's such as Visual 3asic, Developer etc. 4. Users - Users are those persons who need the information from the database to carry out their primary business responsibilities i.e. Personnel, Staff, Clerical, Managers, Executives etc

Advantages of the DBMS:The different advantages of DBMS are as follows.

1. Improved data sharing.

2. Improved data security.

3. Better data integration.

  4. Minimized data inconsistency.

5. Improved data access.

6.Improved decision making.

7.Increased end-user productivity.

 

Disadvantages of Database:

1. Increased costs.

2. Management complexity.

3. Maintaining currency.

4. Frequent upgrade/replacement cycles.

Iccbs library

Data Base using in ICCBS

PCMD Log book (user defined)KOHAPROQUESTChemical Abstracts (Online, CDs)·      SciFinder Scholar·      Dictionary of Natural Products·      Wiley NMR and Mass Spectral Databases·      American Chemical Society Databases·      Cambridge Structural Database System41,800 e-books are accessible,  free access to 50,000 online books, in addition to 23,000 journals.

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