Mutual Fund

MODULE 1 INTRODUCTION TO DATABASES AND DATABASE MANAGEMENT SYSTEMS Information is involve in decision making and this information is cut ind in selective informationbase for operating which a database management system is required. selective information is assembly of raw facts that fag be preserve and have some implicit gist for the user. System is a set of operating elements working for a common objective. entropybase is an incorporate collection of well defined data and information, centrally controlled in all aspects, created and stored in a representative structure for an organization. Database charge System or database management system is a collection of programs that enables the users to create, importanttain and manage a database of an organization. The DBMS is accordingly a general purpose software system that facilitates processes of defining, constructing, manipulating and overlap databases among divers(a) users and applications. [pic] Cylindr ical representation is the format of database. DBMS is the ordinary by means of which the users interact with database.

File system [pic] Limitations – ✓ Concurrent access anomalies ✓ Non-security ✓ Data redundancy and data inconsistency ✓ Integrity problems ✓ Difficulty in accessing of data Elements of a database – ✓ Entities – Basic whole which is a intimacy in current world. (Noun is an entity in terms of database.) ✓ Entity frozen – throng of similar objects is called entity set. (E.g. - Set of Stud ent Names) ✓ Attribute –! Properties that characterize and outline an entity set ✓ Relationship – sleeper between entities is called relationship ✓ panel – Table is the structure in which we store data. Primary unit of storage of data in database Advantages of DBMS – One of the main advantages of using Database system is that the organization put up exert, via Database Administrator, centralized...If you expect to get a full essay, order it on our website: BestEssayCheap.com

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