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what is the role of order by clauseorder by clause the order by clause permits you to sort the records in your result set the order by clause can
what is the use of unique functionunique function if unique is specified then only unique values are used to computed the
what is the used of specifying aliasspecifying alias is used to rename column or attribute in a
while using extract datasets it is required to have a special workarea for interface false it is not required to have a special workarea for
a field-groups statement or an insert statement reverses storage space and transfers values
what does the extract statement do in extract datasetsthe data is written to virtual memory by extract
explain the difference between using functions along with and without grouping attributes in relational algebra give examplesans group functions are
can a filed occur in several field groupsyes but it leads to redundant data
consider the relations city cityname state hotel name address cityhotel hotelname cityname owneranswer the following queries in relational algebrai
consider the subsequent relationsrenterrno fname lname address telno preftype maxrent viewingrno pno date comment propertyforrent pno street area
what is the difference between internal tables and extract datasets the lines of an internal table always have the similar structure by using extract
discuss the mechanism to read data from and write to a disk disk readwrite heads are mechanisms in which read data from or write data to disk drives
what are the reasons for having variable length records what are the various ways to store variable length records variable-length records arise in
when a function module is activated syntax checking is performed automatically yes a function module is activated syntax
what is the disadvantage of a call by reference during a call by reference damage or loss of data is not restricted to the subroutine but will
what is a function group a function group is a collection of logically related modules that share global data with every other all the modules in
what is the difference between the function module and a normal abap4 subroutinein contrast to normal subroutines function modules have uniquely
discuss the methods for a hash file to expand and shrink dynamically what are the advantages and disadvantages of each the hashing methods that
describe the two alternatives for specifying structural constraints on relationship kindsrelationship kinds have certain constraints in which limit
what should be declared explicitly in the corresponding abap4 statements to access internal tables without header lines amp why work area this is
how can one distinguish among different kinds of parameters input parameters are used to pass data to subroutines output parameters are used to pass
explain the conventions for displaying an er schema as an er diagraman e-r diagram scheme might describe certain constraints to that the contents of
differance between internal and external schemainternal and external schema internal schemabull describes the physical storage structurebull uses a
explain forms based and graphical interfaceforms based and graphical interface graphical user interface gui is a kind of user interface which permits
it is not possible to make an abap4 program which having only subroutinesfalse we can make abap4 program which having only