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+Welcome
+-------
+
+NoSQL for cartographers.
+
+
+Motiejus Jakštys
+
+2019-11-08
+
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+
+
+
+
+Why me?
+-------
+
+- 2008: first full-time software job.
+- 2009-2012: graduated Computing Science in Glasgow.
+- 2014-2016: job: Amazon Web Services.
+- 2016-now:  job: Uber.
+
+SQL and NoSQL are part of the job.
+
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+
+
+
+
+What is a server?
+-----------------
+
+Demonstration.
+
+- pi
+- pi-at-home.jpg
+
+
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+
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+
+
+
+SQL
+---
+
+- Invented > 50 years ago.
+- Technologies change, concepts remain.
+
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+
+
+
+Power and limitation of SQL
+---------------------------
+
+Let's model a house on a piece of land.
+
+- There will be always a piece of land under a house.
+- SQL says you can enforce this.
+
+**They must be on the same server to enforce this constraint.**
+
+
+What do we do?
+
+
+
+
+Get a big database
+------------------
+
+$30 to about a $1M.
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+
+Alternatives
+============
+
+Split data across many servers!
+
+Topology is not always needed:
+- Pictures/videos.
+- Stock prices.
+- Sensor measurements.
+
+
+Hey, No SQL!
+
+
+
+
+
+
+
+Sort-of-SQL
+-----------
+
+Leave the syntax, cut out constraints.
+- familiar syntax.
+- more storage.
+- less features.
+
+Hive:
+```
+SELECT a.foo FROM invites a WHERE a.ds='2008-08-15';
+```
+
+
+
+
+
+
+Key-Value: fast & small
+-----------------------
+
+- Different syntax
+- Different features
+
+DynamoDB:
+```
+table = dynamodb.create_table(
+    TableName='users',
+    KeySchema=[
+        { 'AttributeName': 'username', 'KeyType': 'HASH' },
+        { 'AttributeName': 'last_name', 'KeyType': 'RANGE' }
+    ],
+)
+```
+
+
+
+
+
+Key-Value: slow & very big
+---------------------
+
+Videos or just large files? S3 is most popular.
+
+Imaginge an infinite disk.
+
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+
+
+Cloud
+-----
+
+"The Cloud" is just someone's servers with software.
+
+- pi-datacenter.jpg
+- datacenter.jpg
+- snowball-edge.jpg
+
+
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+
+
+
+
+
+Storage
+-------
+
+Storage in "the cloud" is quite cheap. People start moving.
+
+https://www.youtube.com/watch?v=8vQmTZTq7nw
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+
+
+What next?
+----------
+
+- Create an account in S3.
+- Upload a file there.
+- Share it with everyone under your domain.
+- It's free!
+
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+
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+Want to know more?
+------------------
+
+- Stanford Computer Science 101: https://online.stanford.edu/courses/soe-ycscs101-sp-computer-science-101
+- Python programming introduction for everyone: https://tutorial.djangogirls.org/en/
+- Cloud services: https://aws.amazon.com/