[GSOC] Database API

[Daniel Gibson]

Am 29.03.2011 01:18, schrieb Masahiro Nakagawa:
> On Sun, 27 Mar 2011 07:11:01 +0900, David Nadlinger <see at klickverbot.at>
> wrote:
>
>> On 3/26/11 12:44 AM, Masahiro Nakagawa wrote:
>>> Currently, many databases exist.
>>>
>>> * SQL based: MySQL, PostgresSQL, SQLite, etc..
>>> * KVS: Cassandra, HBase, Kumofs, Redis, etc...
>>> * Document Oriented: MongoDB, CouchDB, etc...
>>>
>>> I think next Database API should support these types.
>>
>> I don't think this is the way to go, as there is a huge conceptional
>> difference between relational database systems and »NoSQL« systems
>> such as, say, CouchDB or Cassandra.
>
> It's an open question.
>
> Ruby / Rails has Arel (note that Arel is data access abstraction,
> not database access abstraction. But Database access is a part of data
> access).
> Haskell has Database.Persistent.
> I think other languages will support similar library in the future.

I think proper support for relational databases with SQL is more 
important right now.
Once it is done some abstraction for generic data access can be 
developed, using the relational database support for these databases and 
something else (probably more specific to each NoSQL-Database, because 
AFAIK they are even less compatible to each other than relational DBs) 
for NoSQL-DBs.

Cheers,
- Daniel