Interested to Buy Any Domain ? << Click Here >> for more details...
What is the diff between Truncate table / delete <table
name> purge
- 3 Answers
- 15667 Views
- TCS, I also Faced
- E-Mail Answers
Answer Posted / murthy
TRUNCATE:-IT WILL DELETE ALL THE EXISTING RECORDS IN A TABLE
SYNTAX:-TRUNCATE TABLE <TABLE NAME>
DELETE:-IT WILL DELETE THE RECORDS IN A TABLE DEPENDINFG ON
THE GIVEN CONDITION.
SYNTAX:-DELETE FROM <TABLE NAME> WHERE <CONDITON>
PURGE:-AFTER PERFOMING DROP OPERATION THE TABLES WILL STORE
AT UNDO LOGS SO TO DELETE THE DATA COMPLETELY FROM TAHE
DATA BASE WE WILL PURGE THE RECYCLEBIN.
SYNTAX:-PURGE RECYCLEBIN.
| Is This Answer Correct ? | 10 Yes | 4 No |
Post New Answer View All Answers
what is an alias command? : Sql dba
how do you tune the slow running queries in oracle db , explain the methodology
what is a table called, if it has neither cluster nor non-cluster index? What is it used for? : Sql dba
What is trigger in pl sql?
How do I start sql profiler?
Can you skip header records while loading? : aql loader
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.
What are the types of variables use in pl sql?
what does the t-sql command ident_incr does? : Transact sql
What language is oracle sql developer?
What is memory optimized?
what is recursive stored procedure? : Sql dba
What is crud stand for?
Does oracle use sql?
how to use in conditions? : Sql dba
