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types of evolution -sequential evolution
organic evolutionevolution is a slow continuous irreversible and natural process of change to give rise to advance and diverse forms of life ie
theory of spontaneous generation - abiogenesis or autogenesis -according to this theory the existing living communities have originated from
mechanistis theory-haeckel 1866 -haeckel stating that after each catalysm some new organism suddenly forms as a chance event in one stride from
theory of catastrophism or catalysm cuvier 1769-1832 -the world has passed thorugh several stages and at the end of each stage there was a
theory of eternity of life prayer - 1880 -the theory of eternity of life also called the steady-state theory states that life has ever been in
theory of panspermia -arrhenius 1908 postulated the cosmic panspermia theory that claims that organisms existed throughout the universe and their
cosmozoic theory -richter 1865 proposed the cosmozoic theory that says that life came by spores cosmozoa or other particles from other planets on the
theory of special creation -life originated on the earth due to natural events by the super natural powerthe biblical story of creation of world
origin of earth -big-bang hypothesis -origin of life is linked to origin of earthcosmos the universe originated 10-20 billion years ago by big bang
name resolution during the compilation the plsql compiler relates identifiers like the name of a variable with an address or memory location
running the plsql wrapperto run the plsql wrapper go through the wrap command at your operating system prompt by using the syntax as shownwrap
advantages of wrapping the plsql wrapper convert the plsql source code into a transitional form of the object code by hiding the application
parameter and keyword description tablereferencethis keyword identifies the table or view that should be accessible when you execute the update
parameter and keyword descriptioncollectionnamethis keyword identifies the index-by table nested table or varray formerly declared within the present
parameter and keyword descriptionsqlthis sql is the name of the implicit sql cursorfoundthis attribute results true if an insert delete or update
parameter and keyword descriptionselectitemthis selectitem is a value returned by the select statement and then assigned to the equivalent variable
parameter and keyword descriptionrecordtypenamethis identifies the user-defined type specifier that is used in the subsequent declarations of the
parameter and keyword descriptionprocedurenamethe user-defined procedure is declared by this constructparameternamethis identifies the formal
parameter and keyword descriptionpackagenamethis construct identifies the packageauthid clausethis determine whether all the packaged subprograms
parameter and keyword descriptioncursorvariablenamethis identifies a cursor variable or the parameter formerly declared within the present
parameter and keyword descriptiontypenamethis identifies a user-defined type specifier that is used in the subsequent declarations of the
parameter and keyword descriptionlabelnamethis is an undeclared identifier which optionally labels a loop when used the labelname should be enclosed
parameter and keyword description tablereferencethis identifies a table or view which should be available when you execute the insert statement
keyword and parameter descriptionbooleanexpressionthis is an expression which results the boolean value true false amp null it is related with a