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Explain the function of input controls.
Identify four types of input control and explain the function of each.
Provide an example of a data integrity error that could occur if each of these types of input control were not in place.
Explain the advantages and disadvantages of restricting user interfaces. (User interfaces can often be restricted, limiting the user's ability to navigate to other areas of the system, or out of the system.)
Design and build a graphical representation of a Web-based input for making a hotel reservation, using Visio or PowerPoint or an equivalent.
Research and cite at least three (3) reputable academic sources.
What is a recursive relationship? Give an example not used in the text. A recursive relationship is a relationship among an entity and itself. For example, given the entity PER
Explain degree of relation? Degree of a Relation - The degree or arity of a relation is the number of attributes n of its relation schema.
How is the database organised in Oracle? Database organized within Oracle in terms of table and table holds attributes and values. A database consists of one or more logical
What are the physical characteristics of magnetic disks? Ans: A magnetic disk is a circular plate or platter of plastic or metal that is coated with magnetizable material lik
What is Specialization? Specialization: Specialization permits you to describe new types of information (new structural types or latest domains of information), although reusin
Consider the relations EMP(ENO,ENAME,AGE,BASIC_SALARY) WORK_IN(ENO,DNO) DEPT(DNO,DNAME,CITY) Express the following queries in SQL (i) Find names of employees who work in a dep
Define Deadlock avoidance These protocols as well ensure that the system will never enter a deadlock state although the way it is done is different from deadlock prevention. I
what is completeness constrent?
Describe the benefits of OOD techniques OOD techniques are very useful for development of large and complex systems. It has been noted that large projects that are developed u
Aggregation : One limitation of the E-R diagram is that they do not permit representation of relationships between relationships. In such a case the relationship along with its ent
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