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Oracle Interview-PL/SQL
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can we declare a column having number data type and its scale is larger than pricesion ex: column_name NUMBER(10,100), column_name NUMBAER(10,-84)
Explain the usage of WHERE CURRENT OF clause in cursors ? Name the tables where characteristics of Package, procedure and functions are stored ? Explain the two type of Cursors ? What are two parts of package ? What are two virtual tables available during database trigger execution ? What is Overloading of procedures ? What is Pragma EXECPTION_INIT ? Explain the usage ? What is difference b/w stored procedures and application procedures,stored function and application function.. What are the return values of functions SQLCODE and SQLERRM ? What are the datatypes a available in PL/SQL ? Explian rowid,rownum?what are the psoducolumns we have? What is Raise_application_error ? What are the two parts of a procedure ? Give the structure of the procedure ? What is the basic structure of PL/SQL ? What is PL/SQL ? 1)what is the starting "oracle error number"? 2)what is meant by forward declaration in functions? What is PL/SQL table ? What happens if a procedure that updates a column of table X is called in a database trigger of the same table ? How to avoid using cursors? What to use instead of cursor and in what cases to do so? Is it possible to use Transaction control Statements such a ROLLBACK or COMMIT in Database Trigger ? Why ? How many types of database triggers can be specified on a table ? What are they ? What are the modes of parameters that can be passed to a procedure ? Where the Pre_defined_exceptions are stored ? State the difference between implict and explict cursor's Write the order of precedence for validation of a column in a table ? I. done using Database triggers. ii. done using Integarity Constraints. Give the structure of the function ? Explain how procedures and functions are called in a PL/SQL block ? What are advantages fo Stored Procedures What is an Exception ? What are types of Exception ? What are the PL/SQL Statements used in cursor processing ? What are the components of a PL/SQL Block ? What is a database trigger ? Name some usages of database trigger ? What is a cursor ? Why Cursor is required ? What is a cursor for loop ? What will happen after commit statement ? What are the Restrictions on Cursor Variables? How we can create a table in PL/SQL block. insert records into it??? is it possible by some procedure or function?? please give example... What will the Output for this Coding> Declare Cursor c1 is select * from emp FORUPDATE; Z c1%rowtype; Begin Open C1; Fetch c1 into Z; Commit; Fetch c1 in to Z; end; In a Distributed Database System Can we execu... Show full text: 3,827 characters
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