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explain the relational completenesscodd described the term relational completeness to consider to a language that is complete with respect to
the important issues that a srs must address are a system goals and requirements are differentb request definitionc request specificationd
explain the query processing data query processing permits a user to report or analyze structured and unstructured data pulled from multiple data
define the third normal form the third normal form 3nf is a normal form employed in database normalization 3nf was initially defined by ef codd in
for this assessment students must research and analyse two different scenarios the two scenarios must be chosen from those described below and
what are the objectives of software designobjectives of software
explain why waterfall model is more advantageous than adhoc methods ad-hoc process models-process capability is unpredictable due
discuss the problem of spurious tuples and how we may prevent it ans a spurious tuple is mainly a record in a database that gets created
explain the waterfall modelwaterfall modelthe waterfall model is a sequential software development model in which progress is seen as flowing
what is the difference between serial and sequential files how searching is applied on both ans a serial file is one where the records have
define capability what are the quantities that determine the degree of capability of a software reliability modelcapability refers to the ability of
core dumpscore dumps are a debugging method a printout of all relevant memory locations is obtained and studied all dumps should be well documented
what are the dbms languages explain ans a data definition languages ddl it is employed to specify database schema for example create drop
user and system documentation with examplesuser documentation having descriptions of the functions of a system without reference to how these
describe the difference between a one-to-many and a many-to-many relationship which logical data structures comprise one-to-many and which comprise
equivalence class testingequivalence class testing is based on partitioning the input domain of a program into a number of equivalence classes so
scenarioa scenario is a sequence of events that happen in a particular implementation of the system a scenario can be defined textually by
define physical and logical independence ans physical data independence the ability to modify physical level without causing application program
encapsulation an object expresses the data and information it contains and supports a well described abstraction encapsulation leads to the
define hash files organizationa hashing includes computing the address of a data item by calculating a function on the search key value b a
repeated inheritance if a class inherits more than once from the same class then it is referred to as repeated
classa class is a template that states the properties of objects classes have an interface which having of the operation a body which executes the
aggregation between objectsaggregation among objects shows a relationship it is a wholepart relationship aggregation might be implying containment
explain the cascadeless schedulea cascadeless schedule is one in which for every pair of transactions ti and tj like that tj reads a data item before
explain the recoverable schedule a recoverable schedule is one in which for each pair of transactions ti and tj such that tj reads a data item