Is it possible to configure Hibernate reverse engineering and code generation tool in such a way that one-to-many relation between tables is mapped to entities inheritance instead of enrites relation?
I have Person table and Employee table, which are related with the foreign key (Person contains basic information, Employee the rest). In my Java…
Most of my database tables have a clear unique index through which lookups are done 90% of the time but I am a bit unsure on this one - I have a table which keeps track of user rating totals for items in my database, I now want to add another table, to track individual ratings with an ip address column to make sure no one can rate something…
Hello Geeks,
I am developing some tool for BI. There are terms like Fact, Dimensions and Measures. My application will connect to the normal database and read the data from that table. Now, I want to convert all this data into columnar database. That is all the columns from this table will be transfer into 3 tables each. Consider…
I'm designing a product database where products can have very different attributes depending on their type, but attributes are fixed for each type and types are not manageable at all. E.g.:
magazine: title, issue_number, pages, copies, close_date, release_date
web_site: name, bandwidth, hits, date_from, date_to
I want to use…
I need to represent graph information with database.
Let's say, a is connected to b, c, and d.
a -- b
|_ c
|_ d
I can have a node table for a, b, c, and d, and I can also have a link table (FROM, TO) - (a,b), (a,c), (a,d).
For other implementation there might be a way to store the link info as (a,b,c,d), but the number…
I'm a database n00b and am reading as many books as I can. I have been given responsibility for an ODBC tool where the databases were designed by a hardware engineer with some VB experience - which made him a s/w guru in the small firm at that time.
Things are running slowly and I suspect that the db could have been…
Hey guys,
So I have been given the host, username, and login information for a MySQL Database. I need a client that I can use to log in to the Database remotely and create/update tables and edit all the data.
I found the MySQL Administrator client provided by them, but it seems you can do everything BUT edit the…
I make a application, which has to interfaces. one is desktop and other is web application. both have their own databases (which are same is structure).
I want to sync the database from desktop to remote server and also from remote server to desktop but i have no idea that how it does.
I use the MYSql database.…
I am doing a school project where we need to create an android application which needs to connect to a database. the application needs to gain and store information for people's profiles on the database. But unfortunatly we are a little bit stuck at this point because there are numerous ways to link the…
This is in mysql, but its a database design issue. If you have a one to many relationship, like a bank customer to bank-accounts, typically you would have the table that records the bank-account information have a foreign key that keeps track of the relationship between account and customer. Now this…
I have been building a multi-user database application (in C#/WPF 4.0) that manages tasks for all employees of a company. I now need to add some functionality such as sending an email reminder to someone when a critical task is due. How should this be done? Obviously I don’t want every instance of…
I am trying to grab a reference to images with src's in URI scheme. An example would be the images on google.com/news.
if I alert(escape(saveObj.image)); I get something like below:
…
I am trying to design a sqlite database that will store notes. Each of these notes will have common fields like title, due date, details, priority, and completed.
In addition…
I wanna update my database from my dataset.
mydataadapter = new MySqlDataAdapter("SELECT * FROM table0; SELECT * FROM table1; SELECT * FROM table2;", con);
…