who am i?

Rubyist for Cultural Heritage

i am not...(unfortunately?)

Because I am a Husband

but i do <3 code

And I was once a preacher...

where it all began...

pragmatism = I'm lazy

and it progressed...

and then there were more

and still more...

CouchDB

When I first found out about CouchDB...

CouchDB

And the more I read...

CouchDB

And then I started working with Couch...

Let's Break it Down

A CouchDB Document

{
   "_id": "b4d45d962f2ddec91d1d434d280006bf",
   "_rev": "1-c442720ae4a92bbd2ee4945f68150a2f",
   "title": "CouchDB is so amazing",
   "body": "This is a post body",
   "date":"2013/06/30 18:04:11",
   "author": "Matthew Vincent"
}

Let's Break it Down

Revisions (Yay!!)

{
   "_id": "b4d45d962f2ddec91d1d434d280006bf",
   "_rev": "2-156b979c9d8fabc42ccace0e7a04a426",
   "title": "CouchDB is so amazing",
   "body": "This is a post body.  And now I've added another line.",
   "date":"2013/06/30 18:04:11",
   "author": "Matthew Vincent"
}

Map/reduce

CoffeeScript

(doc) ->
  if doc.title? and doc.date?
    emit doc.title, [doc.date, doc._id]

JavaScript

function(doc) {
  if(doc.title && doc.date) {
    emit(doc.title, [doc.date, doc._id]);
  }
}

results in:

{
   "_id": "_design/blog",
   "_rev": "1-67072284f987db058a4bcf02a57288a2",
   "language": "coffeescript",
   "views": {
       "title_date_id": {
           "map": "(doc) ->\n  if doc.title? and doc.date?\n    emit doc.title, [doc.date, doc._id]\n"
       }
   }
}

Map/reduce

CoffeeScript

(doc) ->
  if doc.title? and doc.date?
    emit doc.title, [doc.date, doc._id]

RESTful Query

GET /blog/_design/blog/_view/title_date_id

JSON Result

{"total_rows":3,"offset":0,"rows":[
{"id":"couchdb-is-so-amazing","key":"CouchDB is so amazing","value":["2013/06/30 18:04:11","couchdb-is-so-amazing"]},
{"id":"my-final-post","key":"My final post","value":["2013/08/30 18:04:11","my-final-post"]},
{"id":"yay-for-archaeology","key":"Yay for Archaeology!!","value":["2013/07/30 18:04:11","yay-for-archaeology"]}
]}

Archaeological heirarchy

!!!

But with Couch, there is no table with a list of fields, squares or loci.

Something a bit more complex

An archaeological field sheet

{
   "_id": "05eedaeea89d4003355688d4762da8b5",
   "_rev": "1-eceefe359ab349fb3025b20363f9c383",
   "field": "B",
   "code": "035",
   "square": "7K91",
   "top_separation": "Average",
   "end_date": "2008-07-10",
   "stratigraphies": [
       {
           "related_locus": "B7K91:034",
           "is_related": "Cuts",
           "related": "Earth layer"
       },
       {
           "related_locus": "B7K91:033",
           "is_related": "Fill Loci",
           "related": "Earth layer"
       }
   ],
   "installation_description": {
       "nari_percent": "0",
       "orientation": "0",
       "stone_percent": "0",
       "limestone_percent": "0",
       "other_name": null,
       "stratigraphy_remarks": null,
       "upper_height": 0.34,
       "ceramic_quality_1": null,
       "ceramic_quality_2": null,
       "earth_percent": "100",
       "remarks": null,
       "bedrock_quality_1": null,
       "bedrock_quality_2": null,
       "plan_type": "Rectangular",
       "plaster_quality_1": null,
       "plaster_quality_2": null,
       "upper_width": 0.23
   },
   "reason": "Looser earth & slightly diff color",
   "artifacts": [
   ],
   "state": "approved",
   "designation": "FT around Wall 11",
   "draw_balks": null,
   "function": "FT for Wall 11",
   "sample_remarks": null,
   "couchrest-type": "Locus",
   "pails": [
   ],
   "balk": null,
   "locus_type": "Installation",
   "samples": [
   ],
   "bottom_separation": "Average",
   "sample_reason": null,
   "start_date": "2008-07-10",
   "stratigraphy_remarks": "Earlier than Wall 11",
   "supervisor": "G. Huffaker",
   "photos": [
   ],
   "cron_type": null,
   "age": "Late Iron 2/Persian",
   "created_at": "2010-07-05T16:06:05Z",
   "levels": [
       {
           "bottom_is_legacy": true,
           "burial": 0,
           "method_top": "T",
           "bottom_level": 912.04,
           "top_is_legacy": true,
           "top_level": 912.33,
           "method_bottom": null,
           "location": 6
       }
   ],
   "updated_at": "2010-07-31T09:44:21Z"
}

To Generate that list

Map:

function(doc){if (doc.field) emit(doc.field,doc.field);};

Reduce

function(keys,values){return true;};

RESTful Query

GET opendig-development/_design/OpenDigRails/_view/fields?group=true

JSON Result

{"rows":[
{"key":"A","value":true},
{"key":"B","value":true},
{"key":"C","value":true},
{"key":"D","value":true},
{"key":"E","value":true},
{"key":"F","value":true},
{"key":"G","value":true},
{"key":"H","value":true},
{"key":"K","value":true},
{"key":"L","value":true},
{"key":"M","value":true},
{"key":"N","value":true},
{"key":"R","value":true},
{"key":"S","value":true}
]}

Then...

Map:

function(doc){emit([doc.field, doc.square], doc.field);};

Reduce

function(keys,values){return true;};

RESTful Query

GET opendig-development/_design/OpenDigRails/_view/squares_by_field?group=true&startkey=["A"]&endkey=["A"]

JSON Result

{"rows":[

]}

It won't work unless...

RESTful Query

GET opendig-development/_design/OpenDigRails/_view/squares_by_field?group=true&startkey=["A"]&endkey=["A",{}]

OR

GET opendig-development/_design/OpenDigRails/_view/squares_by_field?group=true&startkey=["A"]&endkey=["A\uffff"]

JSON Result

{"rows":[
  {"key":["A","7J49"],"value":true},
  {"key":["A","7J59"],"value":true},
  {"key":["A","7J68"],"value":true},
  {"key":["A","7J69"],"value":true},
  {"key":["A","7J78"],"value":true},
  {"key":["A","7J79"],"value":true},
  {"key":["A","7K40"],"value":true},
  {"key":["A","7K41"],"value":true},
  {"key":["A","7K42"],"value":true},
  {"key":["A","7K50"],"value":true},
  {"key":["A","7K51"],"value":true},
  {"key":["A","7K52"],"value":true},
  {"key":["A","7K60"],"value":true},
  {"key":["A","7K61"],"value":true},
  {"key":["A","7K62"],"value":true},
  {"key":["A","7K70"],"value":true},
  {"key":["A","7K71"],"value":true},
  {"key":["A","7K72"],"value":true}
]}

Calling with a single key

Map

function(doc){emit(doc.field + doc.square + ':' + doc.code, doc);}

RESTful Query

GET opendig-development/_design/OpenDigRails/_view/locus?key="B8K11:037"

JSON Result

{"total_rows":3918,"offset":1541,"rows":[
{"id":"778d41ddabf2e4b20673f8af54748abd","key":"B8K11:037","value":{"_id":"778d41ddabf2e4b20673f8af54748abd","_rev":"1-884cae78b3d3024577138acdf2b2003a","field":"B","top_separation":"Clear","square":"8K11","architecture":"0","clean_locus":false,"end_date":"2008-07-09","sub_balks":null,"top_plan":"32,33","installation_description":{"other_percent":"0","plan_quality_1_other":null,"plan_quality_2_other":null,"type":"InstallationDescription","certain":null,"earth_quality_1":null,"earth_quality_2":null,"plan_quality_1":"None","plan_quality_2":null,"mud_quality_1":null,"mud_quality_2":null,"lower_height":0.17999999999999999334,"nari_quality_1":null,"nari_quality_2":null,"other_quality_1":null,"other_quality_2":null,"ceramic_percent":"0","length":2.2999999999999998224,"mudbrick_quality_1":null,"mudbrick_quality_2":null,"plan_remarks":null,"plaster_percent":"0","probable1":"Bench","stone_quality_1":null,"stone_quality_2":null,"lime_quality_1":"Hard","lime_quality_2":null,"lining":"None","lower_width":0.47999999999999998224,"possible1":null,"possible2":null,"bedrock_percent":"0","mud_precent":"0","mudbrick_precent":null,"nari_percent":"0","orientation":"14","stone_percent":"0","limestone_percent":"100","other_name":null,"stratigraphy_remarks":null,"upper_height":0.2000000000000000111,"ceramic_quality_1":null,"ceramic_quality_2":null,"earth_percent":"0","remarks":null,"bedrock_quality_1":null,"bedrock_quality_2":null,"plan_type":"Linear","plaster_quality_1":null,"plaster_quality_2":null,"upper_width":0.54000000000000003553},"reason":"Stacked stones along Wall 9","artifacts":[],"state":"approved","designation":"Stone bench along Wall 9","draw_balks":null,"function":"Stone bench along Wall 9 opposite the cultic niche in the LB building","sample_remarks":null,"couchrest-type":"Locus","pails":[],"balk":null,"locus_type":"Installation","samples":[],"bottom_separation":"Clear","stratigraphies":[{"related_locus":"B8K11:033","is_related":"Under","related":"Earth layer"},{"related_locus":"B8K11:009","is_related":"Abuts","related":"Wall"},{"related_locus":"B8K11:035","is_related":"Sealed agnst by","related":"Surface"},{"related_locus":"B8K11:038","is_related":"Over","related":"Surface"}],"sample_reason":null,"start_date":"2006-07-30","stratigraphy_remarks":"Later than Wall 9; earlier than Surf 35","supervisor":"M. Vincent","photos":[{"upload_content_type":"image/jpeg","upload_file_size":2380984,"date":"2006-07-30","subject":"Progress","legacy_number":null,"number":"06B11398","upload_file_name":"06B11398.jpg","upload_updated_at":"2010-08-07T10:27:11Z"},{"upload_content_type":null,"upload_file_size":null,"date":"2006-08-02","subject":"Final Field B","legacy_number":null,"number":"06B11446","upload_file_name":null,"upload_updated_at":null},{"upload_content_type":"image/jpeg","upload_file_size":89717,"date":"2008-06-30","subject":"Progress","legacy_number":null,"number":"08B11030","upload_file_name":"08B11030.jpg","upload_updated_at":"2010-08-07T10:43:16Z"},{"upload_content_type":null,"upload_file_size":null,"date":"2008-07-04","subject":"Progress","legacy_number":null,"number":"08B11123","upload_file_name":null,"upload_updated_at":null},{"upload_content_type":"image/jpeg","upload_file_size":1306176,"date":"2008-07-09","subject":"Progress","legacy_number":null,"number":"08B11203","upload_file_name":"08B11203.jpg","upload_updated_at":"2010-08-07T10:43:19Z"},{"upload_content_type":"image/jpeg","upload_file_size":176731,"date":"2008-07-29","subject":"Final: LB building central shrine","legacy_number":null,"number":"08B11636","upload_file_name":"08B11636.jpg","upload_updated_at":"2010-08-07T10:43:21Z"},{"upload_content_type":"image/jpeg","upload_file_size":230862,"date":"2008-07-29","subject":"Final: LB building","legacy_number":null,"number":"08B11622","upload_file_name":"08B11622.jpg","upload_updated_at":"2010-08-07T10:43:22Z"},{"upload_content_type":"image/jpeg","upload_file_size":239014,"date":"2008-07-29","subject":"Final: LB building NW part","legacy_number":null,"number":"08B11620","upload_file_name":"08B11620.jpg","upload_updated_at":"2010-08-07T10:43:23Z"}],"cron_type":null,"age":"Late Bronze 2","code":"037","created_at":"2010-07-05T16:06:10Z","levels":[{"bottom_is_legacy":true,"burial":0,"method_top":"T","bottom_level":909.21000000000003638,"top_is_legacy":true,"top_level":909.50999999999999091,"method_bottom":null,"location":5},{"bottom_is_legacy":true,"burial":0,"method_top":"T","bottom_level":909.27999999999997272,"top_is_legacy":true,"top_level":909.40999999999996817,"method_bottom":null,"location":11}],"updated_at":"2010-07-31T09:44:26Z"}}
]}

Calling with multiple keys

RESTful Query

GET opendig-development/_design/OpenDigRails/_view/locus?keys=["B8K11:037", "B8K11:038"]

JSON Result

{"total_rows":3918,"offset":1541,"rows":[
{"id":"778d41ddabf2e4b20673f8af54748abd","key":"B8K11:037","value":{"_id":"778d41ddabf2e4b20673f8af54748abd","_rev":"1-884cae78b3d3024577138acdf2b2003a","field":"B","top_separation":"Clear","square":"8K11","architecture":"0","clean_locus":false,"end_date":"2008-07-09","sub_balks":null,"top_plan":"32,33","installation_description":{"other_percent":"0","plan_quality_1_other":null,"plan_quality_2_other":null,"type":"InstallationDescription","certain":null,"earth_quality_1":null,"earth_quality_2":null,"plan_quality_1":"None","plan_quality_2":null,"mud_quality_1":null,"mud_quality_2":null,"lower_height":0.17999999999999999334,"nari_quality_1":null,"nari_quality_2":null,"other_quality_1":null,"other_quality_2":null,"ceramic_percent":"0","length":2.2999999999999998224,"mudbrick_quality_1":null,"mudbrick_quality_2":null,"plan_remarks":null,"plaster_percent":"0","probable1":"Bench","stone_quality_1":null,"stone_quality_2":null,"lime_quality_1":"Hard","lime_quality_2":null,"lining":"None","lower_width":0.47999999999999998224,"possible1":null,"possible2":null,"bedrock_percent":"0","mud_precent":"0","mudbrick_precent":null,"nari_percent":"0","orientation":"14","stone_percent":"0","limestone_percent":"100","other_name":null,"stratigraphy_remarks":null,"upper_height":0.2000000000000000111,"ceramic_quality_1":null,"ceramic_quality_2":null,"earth_percent":"0","remarks":null,"bedrock_quality_1":null,"bedrock_quality_2":null,"plan_type":"Linear","plaster_quality_1":null,"plaster_quality_2":null,"upper_width":0.54000000000000003553},"reason":"Stacked stones along Wall 9","artifacts":[],"state":"approved","designation":"Stone bench along Wall 9","draw_balks":null,"function":"Stone bench along Wall 9 opposite the cultic niche in the LB building","sample_remarks":null,"couchrest-type":"Locus","pails":[],"balk":null,"locus_type":"Installation","samples":[],"bottom_separation":"Clear","stratigraphies":[{"related_locus":"B8K11:033","is_related":"Under","related":"Earth layer"},{"related_locus":"B8K11:009","is_related":"Abuts","related":"Wall"},{"related_locus":"B8K11:035","is_related":"Sealed agnst by","related":"Surface"},{"related_locus":"B8K11:038","is_related":"Over","related":"Surface"}],"sample_reason":null,"start_date":"2006-07-30","stratigraphy_remarks":"Later than Wall 9; earlier than Surf 35","supervisor":"M. Vincent","photos":[{"upload_content_type":"image/jpeg","upload_file_size":2380984,"date":"2006-07-30","subject":"Progress","legacy_number":null,"number":"06B11398","upload_file_name":"06B11398.jpg","upload_updated_at":"2010-08-07T10:27:11Z"},{"upload_content_type":null,"upload_file_size":null,"date":"2006-08-02","subject":"Final Field B","legacy_number":null,"number":"06B11446","upload_file_name":null,"upload_updated_at":null},{"upload_content_type":"image/jpeg","upload_file_size":89717,"date":"2008-06-30","subject":"Progress","legacy_number":null,"number":"08B11030","upload_file_name":"08B11030.jpg","upload_updated_at":"2010-08-07T10:43:16Z"},{"upload_content_type":null,"upload_file_size":null,"date":"2008-07-04","subject":"Progress","legacy_number":null,"number":"08B11123","upload_file_name":null,"upload_updated_at":null},{"upload_content_type":"image/jpeg","upload_file_size":1306176,"date":"2008-07-09","subject":"Progress","legacy_number":null,"number":"08B11203","upload_file_name":"08B11203.jpg","upload_updated_at":"2010-08-07T10:43:19Z"},{"upload_content_type":"image/jpeg","upload_file_size":176731,"date":"2008-07-29","subject":"Final: LB building central shrine","legacy_number":null,"number":"08B11636","upload_file_name":"08B11636.jpg","upload_updated_at":"2010-08-07T10:43:21Z"},{"upload_content_type":"image/jpeg","upload_file_size":230862,"date":"2008-07-29","subject":"Final: LB building","legacy_number":null,"number":"08B11622","upload_file_name":"08B11622.jpg","upload_updated_at":"2010-08-07T10:43:22Z"},{"upload_content_type":"image/jpeg","upload_file_size":239014,"date":"2008-07-29","subject":"Final: LB building NW part","legacy_number":null,"number":"08B11620","upload_file_name":"08B11620.jpg","upload_updated_at":"2010-08-07T10:43:23Z"}],"cron_type":null,"age":"Late Bronze 2","code":"037","created_at":"2010-07-05T16:06:10Z","levels":[{"bottom_is_legacy":true,"burial":0,"method_top":"T","bottom_level":909.21000000000003638,"top_is_legacy":true,"top_level":909.50999999999999091,"method_bottom":null,"location":5},{"bottom_is_legacy":true,"burial":0,"method_top":"T","bottom_level":909.27999999999997272,"top_is_legacy":true,"top_level":909.40999999999996817,"method_bottom":null,"location":11}],"updated_at":"2010-07-31T09:44:26Z"}},
{"id":"778d41ddabf2e4b20673f8af5493e677","key":"B8K11:038","value":{"_id":"778d41ddabf2e4b20673f8af5493e677","_rev":"1-defd55bee0fb41e3319386c0ed993606","field":"B","top_separation":null,"square":"8K11","architecture":"0","clean_locus":false,"end_date":"2008-07-09","sub_balks":null,"top_plan":null,"reason":"Hard plaster","earth_description":{"carbonized_other_number":0,"earth_other_frequency":0,"burnt_wood_count":0,"pottery":null,"type":"EarthDescription","boulders":0,"shape_a":25,"slope":"2","wetness_description":"Dry","structure":"Random","compactness_degree_2":null,"olive":0,"tabun_fragments":0,"roof_tiles":0,"organic_pocket_size":0,"munsel":"10YR 7/1","pebble_size":0,"wetness_degree":"moderately","length":5,"surface_material":"Plaster","burned_stone":null,"compactness_description_1":"Firm","ash_size":0,"organic_other_size":0,"worked_stone":0,"remarks":"Also 2.5Y 8/1, white","architectural_fragments_description":null,"locus_type":"E","shape_sr":25,"stratigraphy_remarks":null,"earth_other_name":null,"architectural_fragments_count":null,"texture":"Sand clay loam-Silty clay loam","organic_distribution":null,"compactness_degree_1":"very","pebble_frequency":0,"nari_size":0,"glass":0,"unidentifiable_number":0,"stone_distribution":"Random","brick_frequency":0,"nari_frequency":0,"brick_fragments":0,"artifact_distribution":null,"shells":0,"hardness":"Hard","lower_depth":0,"brick_size":0,"carbonized_other_name":null,"cobbles":0,"artifact_other_count":0,"unidentifiable_size":0,"upper_depth":0,"organic_other_name":null,"tesserae":0,"pebbles":300,"burnt_wood_size":0,"width":4,"lam_number":"0","shape_r":25,"carbonized_other_size":0,"flint":null,"organic_other_number":0,"ash_frequency":0,"artifact_other_name":null,"earth_distribution":null,"organic_pocket_number":0,"shape_as":25,"bones":null,"direction":"10","compactness_description_2":null,"earth_other_size":0},"artifacts":[],"state":"approved","designation":"Earliest phase LB floor in the shrine room","draw_balks":null,"function":"Earliest floor of the central shrine room of the LB building","sample_remarks":null,"couchrest-type":"Locus","pails":[],"balk":null,"locus_type":"Earth","samples":[],"bottom_separation":null,"stratigraphies":[{"related_locus":"B8K11:035","is_related":"Under","related":"Surface"},{"related_locus":"B8K11:037","is_related":"Under","related":"Installation"},{"related_locus":"B8K11:039","is_related":"Contiguous to","related":"Surface"},{"related_locus":"B8K11:009","is_related":"Seals against","related":"Wall"},{"related_locus":"B8K11:010","is_related":"Seals against","related":"Wall"},{"related_locus":"B8K11:030","is_related":"Seals against","related":"Wall"},{"related_locus":"B8K11:032","is_related":"Seals against","related":"Installation"}],"sample_reason":null,"start_date":"2008-06-30","stratigraphy_remarks":"Later than the walls of the central shrine room","supervisor":"M. Vincent","photos":[{"upload_content_type":null,"upload_file_size":null,"date":"2008-07-04","subject":"Progress","legacy_number":null,"number":"08B11123","upload_file_name":null,"upload_updated_at":null},{"upload_content_type":"image/jpeg","upload_file_size":1338094,"date":"2008-07-08","subject":"Progress","legacy_number":null,"number":"08B11168","upload_file_name":"08B11168.jpg","upload_updated_at":"2010-08-07T10:43:17Z"},{"upload_content_type":"image/jpeg","upload_file_size":1306176,"date":"2008-07-09","subject":"Progress","legacy_number":null,"number":"08B11203","upload_file_name":"08B11203.jpg","upload_updated_at":"2010-08-07T10:43:19Z"},{"upload_content_type":"image/jpeg","upload_file_size":176731,"date":"2008-07-29","subject":"Final: LB building central shrine","legacy_number":null,"number":"08B11636","upload_file_name":"08B11636.jpg","upload_updated_at":"2010-08-07T10:43:21Z"},{"upload_content_type":"image/jpeg","upload_file_size":230862,"date":"2008-07-29","subject":"Final: LB building","legacy_number":null,"number":"08B11622","upload_file_name":"08B11622.jpg","upload_updated_at":"2010-08-07T10:43:22Z"},{"upload_content_type":"image/jpeg","upload_file_size":239014,"date":"2008-07-29","subject":"Final: LB building NW part","legacy_number":null,"number":"08B11620","upload_file_name":"08B11620.jpg","upload_updated_at":"2010-08-07T10:43:23Z"},{"upload_content_type":"image/jpeg","upload_file_size":183696,"date":"2008-07-29","subject":"Final: LB building NW part 2","legacy_number":null,"number":"08B11628","upload_file_name":"08B11628.jpg","upload_updated_at":"2010-08-07T10:43:24Z"},{"upload_content_type":"image/jpeg","upload_file_size":188514,"date":"2008-07-29","subject":"Final: LB building 2","legacy_number":null,"number":"08B11629","upload_file_name":"08B11629.jpg","upload_updated_at":"2010-08-07T10:43:25Z"},{"upload_content_type":"image/jpeg","upload_file_size":963111,"date":"2008-07-02","subject":"Progress","legacy_number":null,"number":"08B11077","upload_file_name":"08B11077.jpg","upload_updated_at":"2010-08-07T10:43:27Z"},{"upload_content_type":"image/jpeg","upload_file_size":888454,"date":"2008-07-03","subject":"Progress","legacy_number":null,"number":"08B11098","upload_file_name":"08B11098.jpg","upload_updated_at":"2010-08-07T10:43:28Z"}],"cron_type":null,"age":"Late Bronze 2","code":"038","created_at":"2010-07-05T16:06:10Z","levels":[{"bottom_is_legacy":true,"burial":0,"method_top":"T","bottom_level":0,"top_is_legacy":true,"top_level":909.11000000000001364,"method_bottom":null,"location":2},{"bottom_is_legacy":true,"burial":0,"method_top":"T","bottom_level":0,"top_is_legacy":true,"top_level":909.10000000000002274,"method_bottom":null,"location":3},{"bottom_is_legacy":true,"burial":0,"method_top":"T","bottom_level":0,"top_is_legacy":true,"top_level":909.13999999999998636,"method_bottom":null,"location":5},{"bottom_is_legacy":true,"burial":0,"method_top":"T","bottom_level":0,"top_is_legacy":true,"top_level":909.23000000000001819,"method_bottom":null,"location":8},{"bottom_is_legacy":true,"burial":0,"method_top":"T","bottom_level":0,"top_is_legacy":true,"top_level":909.24000000000000909,"method_bottom":null,"location":10},{"bottom_is_legacy":true,"burial":0,"method_top":"T","bottom_level":0,"top_is_legacy":true,"top_level":909.30999999999994543,"method_bottom":null,"location":21},{"bottom_is_legacy":true,"burial":0,"method_top":"T","bottom_level":0,"top_is_legacy":true,"top_level":909.30999999999994543,"method_bottom":null,"location":31},{"bottom_is_legacy":true,"burial":0,"method_top":"T","bottom_level":0,"top_is_legacy":true,"top_level":909.37000000000000455,"method_bottom":null,"location":34}],"updated_at":"2010-07-31T09:44:26Z"}}
]}

Now, what makes CouchDB particularly awesome...

You can embed entire apps within CouchDB.

This reveal.js presentation, is in fact, a CouchApp.

Let's make this thing go live

So, recapping...