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What is a dataset?
A dataset is an in-memory database that is disconnected from any regular database, but has all the significant characteristics of a regular database. Datasets can have many tables, relationships, referential integrity rules, referential integrity actions, views and the equivalent of triggers. Datasets are required to give a standardized, non-proprietary means to process database views. They are especially significant for the processing of views with many multivalued paths.
Explain natural join? Natural Join - Similar as equi-join except in which the join attributes (having similar names) are not involved in the resulting relation. Only one sets
This assignment is worth 45% of your final grade for this module. Marks will be awarded as follows: Prototypes (wireframe and web based prototype) You are expected
Explain Recursive relationship type? Recursive relationship type: A recursive relationship is one in that the similar entity participates more than once in the relationship
What is deadlock? Neither of the transaction can ever proceed with its normal implementation. This situation is known as deadlock.
Explain the two types of participation constraint. Total: The participation of an entity set E in a relationship set R is said to be total if each entity in E participates i
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
construct a b-tree for the following set of key values 2,3,5,7,11,17,19,23,29,31.assume that the tree is initial empty and the values are added in ascending order
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
What are metrics for choosing the best algorithm? Matrices for choosing the best algorithms are as below: Computational complexity Ease of understand ability and im
Implementation of association as an object Implement as a separate association object, independent of either class, as in Figure. An association object is a group of pairs
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