Re^2: Terminology: Is DBIx::Class an ORM?

> I'd say it is an ORM, but ORM can refer to different architectural flavours,

Many thanks, that explains a lot. :)

I'd rather call this an SQL abstraction.

It's much like SQL::Abstract and allows to cover (almost?) all semantics of SQL queries.

But yeah, like I said I'm strongly associating ORM to "Active Records" and the resulting limitations.

Cheers Rolf
_{(addicted to the Perl Programming Language :)

Wikisyntax for the Monastery}

Comment on Re^2: Terminology: Is DBIx::Class an ORM?

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Re^3: Terminology: Is DBIx::Class an ORM? by Anonymous Monk on Jun 04, 2021 at 12:39 UTC
And where do you draw the line between ORM and SQL abstraction?	[reply]
Re^4: Terminology: Is DBIx::Class an ORM? by LanX (Saint) on Jun 04, 2021 at 13:02 UTC
OO and relational algebra are very different paradigms. An ORM will force the class structure onto the RDB-schema. It's only using a subset of SQL and can be mapped back 1-to-1 to an object model (of the particular host language, here Perl). It's like a amputated creole, speaking English words with Latin grammar. But without the possibility to introduce new Latin particles to express the new grammar, forcing you to use costly workarounds.° E.G. there is no "inheritance" in SQL. An SQL-Abstraction attempts to express all or most of the SQL-Space inside the host language, like with a query builder. It's effectively just a new SQL dialect, attempting to map 1-to-1 onto other dialects (like `LIMIT` vs `TOP` ) My impression is/was that DBIC attempts to have the best of both worlds, which also explains it's complexity. For a long read why many people despise ORMs you may want to have a look at Object/Relational Mapping is the Vietnam of Computer Science (I'll skip the first 6 pages about US-Vietnam-War though. :) This blog-entry had a heavy impact and was often discussed in both directions, you might want to google the responses... Cheers Rolf _{(addicted to the Perl Programming Language :) Wikisyntax for the Monastery} update swapped "Chinese" with "Latin" for claritas in metaphora ;-) °) or is it rather speaking Latin with English grammar? :)	[reply] [d/l] [select]

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