1. Jurriaan Schulman
  2. Valentina Database ADK
  3. 日, 11月 26 2017, 09:44 AM
  4.  メールで購読
I think it would be nice if Valentina could inherit a table from another table.

For instance:
Table Buildings
Shared Field1 = “X”, Virtual Field 2, Virtual Field 3

Table Church, derived from Table Buildings
Field1 = “X”, Field 2, Field 3, Field 4

Table School, derived from Table Buildings
Field1 = “X”, Field 2, Field3 , Field 5

Table Primary_School, derived from Table School
Field1 = “X”, Field 2, Field3 , Field 5, Field 6

It should be possible to select the records from the tables like: select all buildings or select all schools where Field 2 = “abc” etc.

I think this would make coding in a object oriented way much easier and would also possibly save disk space.

Is this a Valentina feature Paradigma would be interested in or has planned to implement?

Jurriaan
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Ruslan Zasukhin 承諾済みの回答
Hi Jurriaan, :)

fun is that because of this 25 years ago I have start develop ValentinaDB. OO and Inheritance.
We have made big steps in this direction in last months, but we have stopped for now
because we decide to spent efforts to improve our SQL grammar to be more close to SQL2003 at least.

In v8.0 we will introduce ARRAY type.
Then we going to make composite type,
and then we will finish our vision of Table Inheritance.
Let's hope.

We going to make it much more powerful than exists in PostgreSQL.
For example, links should be inherited.
Let's hope :)
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Jurriaan Schulman 承諾済みの回答
Hello Ruslan,

thank you for your detailed answer. I'm looking forward to using these new features when they are available. Do you hope to implement table inheritance as part of Valentina v8.x sometime in 2018 or is that too optimistic :) ?

Jurriaan
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Ruslan Zasukhin 承諾済みの回答
I think this is possible. v8 we should ship in Dec 2017
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