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List any two significant differences between a file processing system and a DBMS. File Processing System vs. DBMS
Data Independence - Data independence is the capacity to modify the schema at one stage of a database system without having to modify the schema at the further level. In file processing systems the data and applications are commonly interdependent, but DBMS gives the feature of data independence.
Data Redundancy - Data redundancy means needless duplication of data. In file processing systems there is redundancy of data, but in DBMS we can decrease data redundancy through means of normalization procedure without affecting the original data. If we do so in file processing system, it becomes too complex.
The Database administrator (DBA) uses the data dictionary in each phase of a database life cycle, beginning from the data gathering phase to the design, execution and maintenance p
Explain the cartesian product in Database Management System
Explain controlled redundancy? Controlled redundancy : The replication of data within the data warehouse for the purposes of improved data access or understand ability.
Question: i) Explain the terms data warehousing and data mining. ii) Discuss the importance of the following security principles that a digital firm should amongst others, n
Submission Requirements All answers must be computer generated (including text and diagrams). The hand-in version must include a header page (or with sufficient space)
What is ODBC ? ODBC - Open DataBase Connectivity which is also denoted by ODBC enable the integration of SQL along with a common-purpose programming language. ODBC expose data
how to implement mid square hashing?
Consider an information system designed for an online company which provides IT products and services These include desktops, laptops, networking products, IT books, parts, and
Describe the primary key functions? Primary Key : The primary key is an attribute or a set of attributes in which uniquely identify a specific example of an entity. Every entit
List two restrictions that are applied on the modification (updation, insertion or deletion) of base tables through view. Ans: The two restrictions are: 1. If a view
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