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by: Olivier Crčvecoeur |
last post by:
Hello,
Excuse me for my poor english.
I would kike know if create index on the foreign key it's necessary or if
Oracle, are optimized for using foreign key whithout index.
Best regards
...
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by: Robert Brown |
last post by:
Let's say I have a type hierarchy: (just an example)
the general entity customer:
CREATE TABLE customer(customer_id int, customer_name varchar(250),
customer_type int)
three specific...
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by: Dag |
last post by:
Hi,
I tried to create a simple view as follows
CREATE VIEW V_ALL_USERTABLE_COLUMNS
AS
(
SELECT
OBJ.NAME as TableName,
COL.NAME as ColName,
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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...
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by: Ian Davies |
last post by:
I have created a database with about 17 tables. I have been creating foreign
keys some of which have worked but when creating others I get the message
below
*************************
1005...
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by: sonal |
last post by:
Hi all,
I hv started with python just recently... and have been assigned to
make an utility which would be used for data validations...
In short we take up various comma separated data files
for...
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by: apax999 |
last post by:
Kinda new to SQL, using SQL Server 2005.
I have some foreign keys in a couple of tables. I need to drop these
tables, but can't since I'll get the error:
Msg 3726,
Level 16, State 1, Line...
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by: Frank Swarbrick |
last post by:
So we're trying to decide if it's better to use IDENTITY columns or
sequences to create a surrogate key as the primary key for our tables. I
kind of like the identity column, because it's more...
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by: lazyvlad |
last post by:
Hi people, I thought I had a simple problem ahead of me but it turns out it ain't that simple as I hoped it would be. So here is the problem:
I've got a table in a dataset which acts like a join...
|
by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...
|
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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,...
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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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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows...
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by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing,...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and...
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated ...
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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