This document provides an overview and comparison of SQL and NoSQL databases. It lists the most popular databases according to a Stack Overflow survey, including SQL databases like Azure SQL and NoSQL databases like Azure Cosmos DB. It then defines RDBMS and NoSQL databases and provides examples of relational and non-relational data models. The document compares features of SQL and NoSQL databases such as scalability, performance, data modeling flexibility and pricing. It also includes live demo instructions for provisioning Azure SQL and Cosmos DB databases.

2. SQL ? NoSQL ?
GiorgosChrysovalantis Grammatikos
Mail: grammatikos84@gmail.com
Website: cloudopszone.com
MCSA : Cloud Platform

3. Most popular databases in 2018
According
to Stack
Overflow
survey

4. SQL vs NoSQL
Azure SQL (Relational) Azure NoSQL (Non
Relational)
SQL Databases RedisCaches
SQL Server stretch databases Azure Cosmos DB
SQL elastic pools Mongo DB
SQL Data Warehouses Table Storage
Azure Database for MySQL
Servers
Azure Database for PostgreSQL
servers

5. What is easier ?
Develop a Database Or a building ?

6. RDBMS (SQL) Definition
A relational database management system (RDBMS)
is a program that lets you create, update, and
administer a relational database.
NoSQL Definition
NoSQL is a class of database management
systems (DBMS) that do not follow all of
the rules of a relational DBMS and cannot
use traditional SQL to query data.

7. Relational VS Non-Relational Databases
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Relational Database
Non - Relational Database

8. What Offers ?

9. SQL (RDBMS) Types Of Databases

10. SQL Types Of Databases
SQL Database Managed
Instance
Azure SQL Elastic Database Azure Database
Almost 100% compact with on-
premises
Database share resources (CPU, IO,
Memory)
Built-in high availability,
Disaster Recovery,
upgrade
Fully Managed PaaS Good choice for heavy usage or
performance peaks
On-premises application
can access data
Full Isolation & Security 3 elastic pools service tiers (Basic,
Standard, Premium)
Eliminates hardware and
administrative costs

11. SQL Types Of Databases

12. SQL
Management Microsoft offers Performance Dashboard, which allows
the visualisation of the database performance
ElasticGroups A database can be scaled up for an intensive process and
scaled back after the process has completed.
Security Microsoft integrates security features first in the cloud,
e.g.Always Encrypted, Row-level security, Dynamic data
masking, authentication, authorization, threat detection,
auditing etc.
Backup Automatic Backup, Restore database to point-in-time,
whenTDE is enabled, backups are also encrypted.
Performance Performance is measured in database DTUs (Data
Transaction Units = a blended measure of CPU, Memory,
I/O)
Enterprise Features New features are added much faster on cloud than on
premise.These features can be, Online indexing,
partitioning, compression, column store indexes, in
memory capabilities etc.
Benefits of SQL

13. Live Demo (Azure SQL Databases)
Deploy SQL Azure Database
Choose the correct PricingTier
Learn about Settings, Monitoring, Support &
Troubleshooting

14. NoSQL Types Of Databases
KEY VALUE STORE DOCUMENT COLUMN STORE GRAPH DATABASE
Every record is stored as a
{key} with a value.
Records stored as “documents”. Key
is always strings and values can be
string, numeric, Boolean, arrays etc.
Store and process very
large amounts of data
distributed over many
machines
Graph Databases are
built with nodes,
relationships between
nodes and the properties
of nodes
Mappings are usually
accompanied by cache
mechanisms to maximize
performance
Semi-structured documents can be
XML or JSON formatted
Keys point to multiple
columns
API is typically simple Documents can be retrieved with
queries
AzureTables,Azure DocumentDB ->Azure CosmosDB, Hbase,Graph APIs

15. Key-Value
Column-Family
Documents
Graph
NoSQL Types Of Databases (diagrams)

16. Azure CosmosDB Useful Links
 Azure Cosmos DB: SQL API getting started tutorial
 Azure Cosmos Db : Designing your data structure
 Modelling document data for NoSQL databases
 ASP.NET MVCTutorial:Web application development with Azure Cosmos DB

17. NoSQL Types Of Databases

18. NoSQL
Scalability Horizontal scale – out, easy way to reduce capacity quickly
Performance By simply adding resources, enterprises can increase
performance NoSQL database.
HighAvailability NoSQL are by design high available databases, without
complexity
GlobalAvailability By automatically replicating data across multiple server, this
minimize latency and ensure consistent application
experience.
Flexible Data Modelling Developers can leverage the data types and query options
that are most fit to their application. It offers a more agile
development.
Pricing NoSQL databases are a low cost solution in comparison with
SQL databases.
Benefits of NoSQL

19. Live Demo (Azure Cosmos DB)
Deploy Azure Cosmos DB
Choose the correct PricingTier
Learn about Settings, Monitoring, Support &
Troubleshooting

20. SQL NoSQL
Type Relational Non-Relational
Data Structured Data stored inTables Un-structured stored in JSON files.
** Graph Database support
relationship
Schema Static Dynamic
Language StructureQuery Language Un-StructuredQuery Language
Scalability Vertical (Scale-up || Scale-down) Horizontal (Scale-in || Scale-out)
Joins Allow to design complex queries Do not allow complex queries
OLTP Comfortable
Support Great Support Community dependent, they are
expanding the support model
IntegratedCaching Support In-line memory Supports Integrated caching
Flexible
Transaction ACID (Atomic, Consistent, Isolated, Durable) BASECompatibility
Auto Elasticity Requires downtime in most cases Automatic, No outage required
SQL vs NoSQL

21. How can I understand what to choose…

22. Thank You