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suppose that privilege a of exercise 231 is to be given with grant option but only so that account a can grant it to at
consider the following set of facts for the relation parentx v where y is the parent of xa show how to solve the
1 what are the differences between row-level and statement-level active rules2 what are the differences among immediate
1 briefly discuss the consistency and termination problems when designing a set of active rules2 discuss some
1 what are the differences between valid time transaction time and bitemporal relations2 describe how the insert delete
1 describe how the insert delete and update commands should be implemented on a transaction time relation2 what are the
consider a deductive database with the following rulesancestorxy - fatherxyancestorxy - fatherxz ancestorzynotice that
application implementation plans have you ever heard the expression fire ready aim it expresses frustration over the
1 what are the different phases of the knowledge discovery from databases describe a complete application scenario in
1 what are the five types of knowledge produced from data mining2 what are association rules as a type of knowledge
change management is the process of helping people adapt to a change from the as-is system to the to-be system without
1when are voting and elections used in distributed databases2 what are the software components in a client-server ddbms
1 discuss the factors that do not appear in centralized systems that affect concurrency control and recovery in
1 discuss the factors that affect query decomposition how are guard conditions and attribute lists of fragments used
1 discuss the naming problem in distributed databases2 discuss the different techniques for executing an equijoin of
1 how is a horizontal partitioning of a relation specified how can a relation be put back together from a complete
1 what is a fragment of a relation what are the main types of fragments why is fragmentation a useful concept in
1 what are the main reasons for and potential advantages of distributed databases2 what additional functions does a
1 what is the multidimensional data model how is it used in data warehousing2 define these terms star schema snowflake
1 what is a data warehouse how does it differ from a database2 define the terms olap online analytical processing rolap
the kvrneans algorithm uses a similarity metric of distance between a record and a cluster centroid if the attributes
1 show two rules that have a confidence of 07 or greater for an itemset containing three items from exercise 232 for
1 what are the difficulties of mining association rules from large databases2 what are classification rules and how are
1 describe an association rule among hierarchies with an example2 what is a negative association rule in the context of
1 what is the downward closure property how does it aid in developing an efficient algorithm for finding association