Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / swapna
CREATE OR REPLACE FUNCTION cons_dependants (tname IN
VARCHAR2, cvalue IN NUMBER)
RETURN NUMBER
IS
CURSOR depen_cur
IS
SELECT c1.table_name table_name, c2.column_name
column_name
FROM user_constraints c1, user_cons_columns c2,
user_constraints c
WHERE c1.constraint_name = c2.constraint_name
AND c1.r_constraint_name = c.constraint_name
AND c.table_name = UPPER (tname);
tbl_cnt NUMBER;
sql_cur NUMBER;
qry_stmt VARCHAR2 (1000);
v_tbl_cnt NUMBER;
BEGIN
FOR i IN depen_cur
LOOP
/*PREPARE THE GENERAL QUERY STATEMENT TO FIND OUT THE DATA
EXISTANCE IN DEPENDANT TABLES*/
dbms_output.put_line(i.table_name);
qry_stmt := 'select count(*) from '
|| i.table_name
|| ' where '
|| i.column_name
|| ' = '
|| ':c_bind_value'
|| ' and '
|| 'record_status ='
|| ' '
|| '''N''';
DBMS_OUTPUT.put_line (qry_stmt);
sql_cur := DBMS_SQL.open_cursor;
DBMS_SQL.parse (sql_cur, qry_stmt, DBMS_SQL.native);
DBMS_SQL.bind_variable (sql_cur, ':c_bind_value',
cvalue);
DBMS_SQL.define_column (sql_cur, 1, v_tbl_cnt);
tbl_cnt := DBMS_SQL.EXECUTE (sql_cur);
IF DBMS_SQL.fetch_rows (sql_cur) > 0
THEN
DBMS_SQL.column_value (sql_cur, 1, v_tbl_cnt);
DBMS_OUTPUT.put_line (v_tbl_cnt||' number of
rows');
IF v_tbl_cnt > 0
THEN
DBMS_SQL.close_cursor (sql_cur);
RETURN 1;
ELSIF v_tbl_cnt = 0
THEN
DBMS_SQL.close_cursor (sql_cur);
END IF;
END IF;
END LOOP;
RETURN -1; /*CAN DELETE THE RECORDS*/
END cons_dependants;
/
| Is This Answer Correct ? | 3 Yes | 10 No |
Post New Answer View All Answers
how to drop an existing view in mysql? : Sql dba
Define join and name different types of joins?
How do you create an update query?
How do you update f as m and m as f from the below table testtable?
what are tables and fields? : Sql dba
create SQL (both DML/DDL) statements appropriate for the creation of relational structures & constraints and other objects for a given case study, the population of these tables and the manipulation (querying/updating) of the stored data. 2. Create, develop and use the PL / SQL Program Units Procedures, Functions as a progression towards Object Oriented Relational Database Programming. 3. Package a collection of logically related Procedures and Functions together to further move towards development of Objects which reflect the principle of Data Abstraction whereby only an Object specified in the Interface is accessible to the end user. 4. Select, create, and use appropriate Database Triggers to impose agreed specific constraints on a Database Table. 5. Provide a full and detailed evaluation which includes a comprehensive test execution plan and its implementation for each of the above. Consider the following case study: Perilous Printing is a medium size printing company that does work for book publishers throughout UK. The company currently has 10 offices, most of which operate autonomously, apart from salaries, which are paid by the head office. Currently the sharing and communication of data, is carried out using multi- user networked access to a centralised RDBMS. Perilous Printing jobs consist of printing books or part of books. A printing job requires the use of materials, such as paper and ink, which are assigned to a job via purchase orders. Each printing job may have several purchase orders assigned to it. Likewise, each purchase order may contain several purchase order items. The following tables form part of the transactional RDB that the company uses: office (office_no, o_addr, o_telno, o_faxno, mgr_nin) staff (staff_no, nin, fname, lname, s_addr, s_telno, gender, dob, position, taxcode, salary, office_no) publisher (pub_no, p_name, p_city, p_telno, p_faxno, credit_code, office_no) book_job (job_no, pub_no, job_date, job_desc, job_type, job_status, supervisor_nin) purchase_order (job_no, po_no, po_date) po_item (job_no, po_no, it_no, qty) item (it_no, it_desc, amt_in_stock, price) office contains details of each office and the office number (office_no) is the key. Each office has a Manager represented by the manager’s national insurance number (mgr_nin). staff contains details of staff; the staff_no is the key. The office that the member of staff works from is given by office_no. publisher contains details of publisher and the publisher number (pub_no) is the key. Publishers are registered with the nearest office in their country, given by office_no, and they are given a credit code that can have the values “AA”, “AB”, “BB”, “BC”, “CC”, “CD” and “DD”. If a publisher is to be deleted then not only the publisher’s entry from the publisher table will have to be removed but all the data associated with the particular supplier has to be deleted too book_job contains details of publishing jobs and the job number (job_no) is the key. The publisher is given by the publisher number (pub_no) and the supervisor for the job by supervisor_nin. The job type can be either null or urgent; whereas the job_status can be “ongoing” or “completed” purchase_order contains details of the purchase orders for each job and the combination of job number and a purchase order number (job_no, po_no) form the key. Each printing job may have several purchase orders assigned to it. item contains details of all materials that can be used in printing jobs and the item number (it_no) is the key. po_item contains details of the items on the purchase order and (job_no, po_no, it_no) forms the key. In the above given database schema, descriptions are strings of characters (at most 30 characters long), any dates (except the job_ date) stored cannot be after the current system date, and quantities and prices are assumed to be non-negative numbers.
Explain the difference between 'between' & 'and' operators in sql
Can you selectively load only those records that you need? : aql loader
What is varchar example?
what is the difference between cluster and non cluster index? : Sql dba
How do you add a column to a table?
Why use subqueries instead of joins?
What is the life of an sql statement?
What are types of indexes in sql?
what is the difference difference between procedure and packages
