Esiefarienrhe Michael Bukohwo

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The NP-hard join ordering problem is a fundamental issue any optimizer must resolve to produce an optimal execution plan for queries. This problem becomes even more complex when the databases become distributed. With distributed databases comes the problem of query results optimization from multi-execution plan. The issues addressed in this paper includes(More)
Software Project failure particularly in Nigeria, Kenya and Zimbabwe is partly due to lack of adequate knowledge on the part of software developers on software risk management methodologies and the roles they play in software engineering. Over the years and with increase in software project failures, no attention has been paid to the reasons behind project(More)
Today, several institutions of higher learning are using access cards as access control measure to gain access to their institutions and facilities. Though, these cards are simple and convenient in terms of usage, they offer the lowest security strength as they are often prone to lost, theft, forget and clone. If compromised, valuable information and asset(More)
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