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Describe the major advantages and disadvantages of a database system approach to managing data.
Given the DBLC as a structured methodology for designing and implementing a database system, explain the activities that are associated with each phase.
Describe four significant differences between a file-processing system and a DBMS.
Outline at least two reasons why database systems support data manipulation using a declarative query language such as SQL, rather than just providing a library of C or C++ functions to carry out data manipulation. Support your answer by example.
question 1 entity-relationship er model create an er diagram using the set of requirements provided for oxford city
You are interested in examining some hard-to-obtain data from two separate databases. Each database comprises numerical values - so there are 2n values total
Describe the basic features of the RDB model and discuss their importance to the end-user and the designer.
what do you think is the wisdom of maintaining 2 models? The W3C has a Document Object Model as a recommendation. Do you think browsers should implement this model? If not, propose a model which you think would be suitable.
Compare activity (quite theoretical) of the disk (in number of bytes) required for each of both relational. Write down the advantages and inconveniences of new relational scheme.
Write a password protected console-based application, which enables you to create user accounts and specify the name of the file or directory to be shared with other users.
Write a program to sort these back into a single file. Oh, and we only have a few nanoseconds to do it, so you'd better do it with pthreads!
To apply and consolidate skills acquired in the requirement and analysis disciplines through analysis of a simple case study, and to express the results through the relevant UML diagrams. ITC203
These comprise NOT NULL, CHECK, UNIQUE, REFERENTIAL INTEGRITY, and PRIMARY KEY constraints. Are these constraints which we are talking about easy to implement in Access Database?
Create mission statements and mission objectives for database systems explained in the following case study EasyDrive School of Motoring. Also in mission objectives include 10 reports that the database system must support
Each department has many employees assigned to it, but each employee works for only one department at one of the factories. An employee cannot work at more than one factory at a time.
question 1research the definition of a minimal cover. explain it in your own words and give an example. question
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