Solr=search engine Mongodb=schemaless database
> On Aug 5, 2017, at 12:26 AM, Walter Underwood <wun...@wunderwood.org> wrote: > > MarkLogic can do many-to-many. I worked there six years ago. They use search > engine index structure with generational updates, including segment level > caches. With locking. Pretty good stuff. > > A many to many relationship is an intersection across posting lists, with > transactions. Straightforward, but not easy to do it fast. > > The “Inside MarkLogic Server” paper does a good job of explaining the guts. > > Now, back to our regularly scheduled Solr presentations. > > wunder > Walter Underwood > wun...@wunderwood.org > http://observer.wunderwood.org/ (my blog) > > >> On Aug 4, 2017, at 8:13 PM, David Hastings <dhasti...@wshein.com> wrote: >> >> Also, id love to see an example of a many to many relationship in a nosql db >> as you described, since that's a rdbms concept. If it exists in a nosql >> environment I would like to learn how... >> >>> On Aug 4, 2017, at 10:56 PM, Dave <hastings.recurs...@gmail.com> wrote: >>> >>> Uhm. Dude are you drinking? >>> >>> 1. Lucidworks would never say that. >>> 2. Maria is not a json +MySQL. Maria is a fork of the last open source >>> version of MySQL before oracle bought them >>> 3.walter is 100% correct. Solr is search. The only complex data structure >>> it has is an array. Something like mongo can do arrays hashes arrays of >>> hashes etc, it's actually json based. But it can't search well as a search >>> engine can. >>> >>> There is no one tool. Use each for their own abilities. >>> >>> >>>> On Aug 4, 2017, at 10:35 PM, GW <thegeofo...@gmail.com> wrote: >>>> >>>> The people @ Lucidworks would beg to disagree but I know exactly what you >>>> are saying Walter. >>>> >>>> A simple flat file like a cardx is fine and dandy as a Solrcloud noSQL DB. >>>> I like to express it as knowing when to fish and when to cut bait. As soon >>>> as you are in the one - many or many - many world a real DB is a whole lot >>>> more sensible. >>>> >>>> Augment your one-many|many-many NoSQL DB with a Solrcloud and you've got a >>>> rocket. Maria (MySQL with JSON) has had text search for a long time but It >>>> just does not compare to Solr. Put the two together and you've got some >>>> serious magic. >>>> >>>> No offense intended, There's nothing wrong with being 97.5% correct. I wish >>>> I could be 97.5% correct all the time. :-) >>>> >>>> >>>> >>>>> On 4 August 2017 at 18:41, Walter Underwood <wun...@wunderwood.org> wrote: >>>>> >>>>> Solr is NOT a database. If you need a database, don’t choose Solr. >>>>> >>>>> If you need both a database and search, choose MarkLogic. >>>>> >>>>> wunder >>>>> Walter Underwood >>>>> wun...@wunderwood.org >>>>> http://observer.wunderwood.org/ (my blog) >>>>> >>>>> >>>>>> On Aug 4, 2017, at 4:16 PM, Francesco Viscomi <fvisc...@gmail.com> >>>>> wrote: >>>>>> >>>>>> Hi all, >>>>>> why i have to choose solr if mongoDb is easier to learn and to use? >>>>>> Both are NoSql database, is there a good reason to chose solr and not >>>>>> mongoDb? >>>>>> >>>>>> thanks really much >>>>>> >>>>>> -- >>>>>> Ing. Viscomi Francesco >>>>> >>>>> >
