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Describe the objective of Structural Diagrams
The main objective of structural diagram is to visualize, construct, specify and document static aspects of a system. Their elements consist of class, active class, interface, component, processes, node, threads, documents, applications, files, pages, library etc. The four major structural diagrams are class, object, and component and deployment diagram.
What is B-Tree? A B-tree eliminates the redundant storage of search-key values .It permits search key values to appear only once.
Relationship between Security and Integrity: Database security usually refers to access, while database integrity refers to avoidance of accidental loss of consistency. But usually
What is the purpose of tables, private synonyms and public synonyms? If there are multiple objects of similar name on an Oracle database, that order are they accessed in? The r
what is meant semantic query optimization? how does it differ from other query optimization techniques?
How does a query tree represent a relational algebra expression? Ans: This includes transforming an initial expression (tree) into an equivalent expression (tree) that is
We have a new website where I need someone to 1: Inhabit the back end with all the recruitment agencies in the UK. I require someone who is not manually going to do this, but who w
write an SQL statement to create the database in MYSQL server
Conflicting Operations in Schedule: The three simple ways of interleaved instruction implement of transactions T1 and T2. Please note that in the following tables the first col
Database Errors: An error is said to have occurred if the implementation of a command to manipulate the database cannot be successfully finished either due to inconsistent data or
Compute the closure (F+) for the following set of the functional dependencies defined on R(a,b,c,d), where F - {c→ a, ab → d, a → b, d → c}, i.e. what are all of the FDs implied b
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