Re: [netmod] WG Last Call: draft-ietf-netmod-schema-mount-07
Robert Wilton <rwilton@cisco.com> Fri, 10 November 2017 13:35 UTC
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To: "netmod@ietf.org" <netmod@ietf.org>, Martin Bjorklund <mbj@tail-f.com>, Kent Watsen <kwatsen@juniper.net>
References: <47B1141C-8979-4910-B7CA-2114B9C0D352@juniper.net> <68c6a4d5-fd3e-efdb-9c34-f69f241d6a31@cisco.com> <874lq4oq94.fsf@nic.cz> <7d8a8b01-6d3b-ac29-dd58-f2771ecdad56@cisco.com> <87d14rjwdq.fsf@nic.cz> <56ea1907-c2ed-1940-089c-527b33f0723e@cisco.com> <20171109181638.zel2otpzrptggvwz@elstar.local>
From: Robert Wilton <rwilton@cisco.com>
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Date: Fri, 10 Nov 2017 13:35:38 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/netmod/b628YLMZOcc6W5HOZtEqwNfVrXY>
Subject: Re: [netmod] WG Last Call: draft-ietf-netmod-schema-mount-07
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On 09/11/2017 18:16, Juergen Schoenwaelder wrote: > On Thu, Nov 09, 2017 at 05:38:40PM +0000, Robert Wilton wrote: >>>>>> 3. Sec 2.1 Glossary of New Terms: "Schema" isn't actually defined >>>>>> anywhere (RFC 7950 doesn't define this). Should it be defined here? >>>>>> The NMDA datastores draft had a similar issue and we choose to define >>>>>> "datastore schema" instead. >>>>> I think the right place for defining the term "schema" (and "data model" >>>>> as well) is the specification of YANG because it is desirable that all >>>>> documents related to YANG use the same meaning. >>>> OK, 7950 doesn't define it today. Is that a problem? >>> "Schema tree" and "schema node" are defined and used a lot in 7950, so >>> it might be good to define "schema" as well - meaning the schema tree >>> with all associated semantics. >> OK, but we can't add definitions to 7950 now. Would it make sense to add >> the definition to the NMDA draft and reference that? > So what is the difference between "schema tree" and "schema"? Or to > put it differently, what is "all associated semantics" that you are > adding to a "schema tree" to obtain a "schema"? RFC 7950 says: > > o schema tree: The definition hierarchy specified within a module. When I read this definition of schema tree, it makes me think that it applies to only a single module. E.g. you could have the ietf-ip schema tree, or the ietf-interfaces schema tree, etc. But I think of a"schema" as being the tree structure of all schema nodes for a defined set of modules. > > If I understand 'definition hierarchy' correctly, than it seems > "schema" is just an abbreviation of "schema tree", i.e., there is no > semantic difference between these two terms. If there is a difference, > we need to be able to spell it out. So, if "schema tree" refers to the schema nodes in one module, I think "schema" is different from "schema tree". But perhaps I'm misinterpreting the "schema tree" definition. Thanks, Rob > > /js >
- [netmod] WG Last Call: draft-ietf-netmod-schema-m… Kent Watsen
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Jeff Tantsura
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Ladislav Lhotka
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Xufeng Liu
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Acee Lindem (acee)
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Juergen Schoenwaelder
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Dean Bogdanovic
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Andy Bierman
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Xufeng Liu
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Robert Wilton
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Ladislav Lhotka
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Christian Hopps
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Ladislav Lhotka
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Robert Wilton
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Ladislav Lhotka
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Andy Bierman
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Ladislav Lhotka
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Robert Wilton
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Andy Bierman
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Juergen Schoenwaelder
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Robert Wilton
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Robert Wilton
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Ladislav Lhotka
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Juergen Schoenwaelder
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Lou Berger
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Ladislav Lhotka
- Re: [netmod] WG Last Call: draft-ietf-netmod-sche… Ladislav Lhotka