by: Carlos Ibarra |
last post by:
In various places I have seen mentioned the importance of indexing
foreign keys to avoid table locks on the child table on parent
update/delete and full table scans when the constraint has action...
|
by: Rainer Collet |
last post by:
Hi!
I have a question how to solve the folloing task:
I have 2 tables referencing each over: An user table and an address
table. Each user has one or no address. If an user is dropped the...
|
by: Vinodh Kumar P |
last post by:
I understand the number of foreign keys allowed is restricted by the DBMS I
use.
In a general relational schema design perspective how many foreign keys a
table shall have?
If I have large number...
|
by: unreal4u |
last post by:
hi everybody .. first post ... hope someone answers it ...
Well .. this is my problem ... I got 2 tables:
/*==============================================================*/
/* Table:...
|
by: lundeman |
last post by:
Hi list
As I'm new to this list please kick me in the right direction if this question
is better asked somewhere else.
I'm seing some wird behavoure regarding foreign keys.
My situation is...
|
by: D. Dante Lorenso |
last post by:
I'd like to run a clean up command on my tables to
eliminate rows that I'm no longer using in the database.
I want to do something like this:
DELETE FROM tablename
WHERE...
|
by: Thomas T. Thai |
last post by:
I'm looking for a better way to make use of foreign keys. Here is a
sample setup:
-- TESTING Foreign Keys
create table mod (
mod_id int not null primary key,
name varchar(32) not null...
|
by: Ivan |
last post by:
Hello to all and thanks for answer to my topics.
I made one stored procedure that delete one table, but when
call/execute the procedure this show
SQL0532N A parent row cannot be deleted...
|
by: bobdurie |
last post by:
If i create a simple table with a foreign key constraint, does it
create an implicit index on that given ID? I've been told this is
done in some databases, but i need to know for sure if SQL...
|
by: nustapha |
last post by:
Hi,
I can see foreign keys in the information schema db in mysql but there is no information about 'on delete cascade' or 'on update...'.
How can I get all information about foreign keys?
|
by: taylorcarr |
last post by:
A Canon printer is a smart device known for being advanced, efficient, and reliable. It is designed for home, office, and hybrid workspace use and can also be used for a variety of purposes. However,...
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by: Charles Arthur |
last post by:
How do i turn on java script on a villaon, callus and itel keypad mobile phone
|
by: ryjfgjl |
last post by:
If we have dozens or hundreds of excel to import into the database, if we use the excel import function provided by database editors such as navicat, it will be extremely tedious and time-consuming...
|
by: ryjfgjl |
last post by:
In our work, we often receive Excel tables with data in the same format. If we want to analyze these data, it can be difficult to analyze them because the data is spread across multiple Excel files...
|
by: emmanuelkatto |
last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud.
Please let me know.
Thanks!
Emmanuel
|
by: BarryA |
last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
|
by: Sonnysonu |
last post by:
This is the data of csv file
1 2 3
1 2 3
1 2 3
1 2 3
2 3
2 3
3
the lengths should be different i have to store the data by column-wise with in the specific length.
suppose the i have to...
|
by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers,...
|
by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...
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