MongoDB - The Ultimate Administration and Developer's Guide

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Firoj Atar

31:10:12

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1. Welcome

1. Welcome to the Course!.mp4

08:21

2. Introduction to NoSQL

1. Introduction to NoSQL.mp4

04:38

2. Types of NoSQL Databases.mp4

08:57

3.1 SLIDES 2.1 to 2.2 - Introduction to NoSQL.pdf

3. SLIDES - Introduction to NoSQL.html

3. Introduction to MongoDB

1. Introduction to MongoDB.mp4

03:18

2. Difference between MongoDB and RDBMS.mp4

03:23

3. Introduction to CAP Theorem.mp4

03:33

4. Introduction to JSON.mp4

07:10

5. Introduction to BSON and Types.mp4

05:07

6. Introduction to MongoDB Document.mp4

02:21

7.1 PRACTICE - 3.1 to 3.6 - Introduction to MongoDB.pdf

7.2 SLIDES 3.1 to 3.6 - Introduction to MongoDB.pdf

7. SLIDES and PRACTICE - Introduction to MongoDB.html

4. MongoDB Installation

1. MongoDB Installation Options.mp4

04:58

2. MongoDB Installation on Windows.mp4

12:08

3. MongoDB Installation on Linux (Ubuntu).mp4

15:37

4. MongoDB Installation on Linux (Tarball).mp4

15:58

5. Databases and Collections.mp4

02:48

6. Views and Capped Collections.mp4

04:49

7.1 PRACTICE - 4.1 to 4.6 - MongoDB Installation Options.pdf

7.2 SLIDES 4.1 to 4.6 - MongoDB Installation Options.pdf

7. SLIDES and PRACTICE - MongoDB Installation.html

5. Introduction to MongoDB Shell

1. What is MongoDB Shell.mp4

05:38

2. Configuring MongoDB Shell.mp4

11:05

3. Accessing the MongoDB Shell Help.mp4

03:57

4. Understanding Data Types in MongoDB Shell.mp4

03:40

5.1 PRACTICE - 5.1 to 5.4 - Introduction to MongoDB Shell.pdf

5.2 SLIDES 5.1 to 5.4 - Introduction to MongoDB Shell.pdf

5. SLIDES and PRACTICE - Introduction to MongoDB Shell.html

6. Basics of CRUD Operations

1. Introduction to CRUD Operations.mp4

01:31

2. Creating Database and Collections.mp4

17:14

3. Insert Operation.mp4

02:23

4. Read (Query) Operation.mp4

02:23

5. Update Operation.mp4

01:59

6. Delete (Remove) Operation.mp4

01:31

7.1 PRACTICE - 6.1 to 6.6 - Introduction to CRUD operations.pdf

7.2 SLIDES 6.1 to 6.6 - Introduction to CRUD operations.pdf

7. SLIDES and PRACTICE - Basics of CRUD Operations.html

7. In-depth Insert Operations

1. Overview of Insert Methods.mp4

01:01

2. insert() Method.mp4

07:24

3. insertOne() Method.mp4

05:28

4. InsertMany() Method.mp4

04:34

5. _id Field.mp4

02:14

6. Inserting Complex Documents.mp4

08:40

7.1 PRACTICE - 7.1 to 7.6 - MongoDB Insert Operation.pdf

7.2 SLIDES 7.1 to 7.6 - MongoDB Insert Operation.pdf

7. SLIDES and PRACTICE - In-depth Insert Operations.html

8. In-depth Read Operations

1. Overview of Read Methods.mp4

01:49

2. findOne() Method.mp4

05:41

3. find() Method.mp4

05:05

4. Query Nested or Embedded Documents.mp4

09:43

5. Query an Array Field in Documents.mp4

07:24

6. Query an Array of Embedded Documents.mp4

14:21

7. Project Fields to Return from Query.mp4

15:04

8. Iterate the Cursor.mp4

13:04

9. Query and Projection Operators.mp4

03:07

10. Comparison Operators - $eq, $in, $ne, $nin.mp4

11. Comparison Operators - $gt, $gte, $lt, $lte.mp4

12. Logical operators - $and, $or.mp4

13. Logical operators - $not, $nor.mp4

14. Element Operators - $exists, $type.mp4

15. Evaluation Operators - $expr, $regex.mp4

16. Array Operators - $all, $elemMatch, $size.mp4

17. Projection Operators - $, $elemMatch.mp4

18.1 PRACTICE - 8.1 to 8.17 - MongoDB Read Operation.pdf

18.2 SLIDES 8.1 to 8.17 - MongoDB Read Operation.pdf

18. SLIDES and PRACTICE - In-depth Read Operations.html

9. In-depth Update Operations

1. Overview of Update Methods.mp4

01:29

2. update() Method with $set Operator.mp4

3. update() Method with $unset Operator.mp4

4. updateOne() Method.mp4

04:14

5. updateMany() Method.mp4

05:27

6. replaceOne() Method.mp4

05:00

7. Update with Upsert Operations.mp4

14:56

8. Field Update Operators.mp4

01:29

9. $currentDate Operator.mp4

10. $rename Operator.mp4

11. $inc, $min, $max, $mul Operators.mp4

12. Array Update Operators.mp4

01:17

13. Placeholder Operator - $.mp4

07:53

14. $addToSet Operator.mp4

15. $pop Operator.mp4

16. $pull, $pullAll Operators.mp4

17. $push Operator.mp4

18. $each Operator with $push and $addToSet Operators.mp4

19. Sort Array Elements using $sort+ $push Operators.mp4

20.1 PRACTICE - 9.1 to 9.19 - MongoDB Update Operation.pdf

20.2 SLIDES 9.1 to 9.19 - MongoDB Update Operation.pdf

20. SLIDES and PRACTICE - In-depth Update Operations.html

10. In-depth Delete Operations

1. Overview of Delete Methods.mp4

01:26

2. deleteOne() Method.mp4

04:07

3. deleteMany() Method.mp4

04:23

4. remove() Method.mp4

08:11

5. Dropping MongoDB Collections.mp4

03:10

6. Dropping MongoDB Databases.mp4

04:35

7.1 PRACTICE - 10.1 to 10.6 - MongoDB Delete Operation.pdf

7.2 SLIDES 10.1 to 10.6 - MongoDB Delete Operation.pdf

7. SLIDES and PRACTICE - In-depth Delete Operations.html

11. Additional CRUD Related Methods

1. Overview of Additional CRUD Methods.mp4

01:48

2. findOneAndDelete() Method.mp4

13:41

3. findOneAndReplace() Method.mp4

13:57

4. findOneAndUpdate() Method.mp4

14:16

5. findAndModify() Method.mp4

16:44

6. bulkWrite() Method.mp4

15:35

7.1 PRACTICE - 11.1 to 11.6 - Additional CRUD related Methods.pdf

7.2 SLIDES 11.1 to 11.6 - Additional CRUD related Methods.pdf

7. SLIDES and PRACTICE - Additional CRUD Related Methods.html

12. MongoDB Aggregation

1. Introduction to MongoDB Aggregation.mp4

04:00

2. Introduction to Aggregation Pipeline.mp4

06:14

3. Aggregation Pipeline Stages.mp4

01:49

4. $match Stage.mp4

5. $group Stage.mp4

6. $project Stage.mp4

7. $count Stage.mp4

8. $collStats Stage.mp4

9. $indexStats Stage.mp4

10. $set Stage.mp4

11. $unset Stage.mp4

12. $unwind Stage.mp4

13. $lookup Stage.mp4

14. $unionWith Stage.mp4

15. $limit Stage.mp4

16. $skip Stage.mp4

17. $sort Stage.mp4

18. $out Stage.mp4

19. Aggregation Pipeline Operators.mp4

04:29

20. Arithmetic Expression Operators.mp4

08:48

21. Array Expression Operators.mp4

08:44

22. Boolean Expression Operators.mp4

10:42

23. Comparison Expression Operators.mp4

08:25

24. String Expression Operators.mp4

13:33

25. Type Expression Operators.mp4

12:11

26. Aggregation Pipeline Optimization.mp4

13:03

27. Aggregation Pipeline Limits.mp4

03:58

28. SQL Terms vs MongoDB Aggregation Operators.mp4

02:59

29.1 PRACTICE - 12.1 to 12.28 - Introduction to Aggregation.pdf

29.2 SLIDES 12.1 to 12.28 - Introduction to Aggregation.pdf

29. SLIDES and PRACTICE - MongoDB Aggregation.html

13. MongoDB Data Modeling

1. Introduction to MongoDB Data Modeling.mp4

02:09

2. Embedded Data Model.mp4

06:04

3. References Data Model.mp4

05:39

4. Perform Schema Validations.mp4

08:49

5.1 PRACTICE - 13.1 to 13.4 - Data Modeling.pdf

5.2 SLIDES 13.1 to 13.4 - Data modeling.pdf

5. SLIDES and PRACTICE - MongoDB Data modeling.html

14. MongoDB Indexes

1. Introduction to MongoDB Indexes.mp4

05:16

2. Different Types of Indexes.mp4

03:40

3. Index Creation in MongoDB.mp4

04:12

4. Specify the Name to the Index.mp4

05:02

5. Listing the Indexes.mp4

03:07

6. Default _id Index.mp4

01:34

7. Drop an Index.mp4

05:39

8. Single Field Index.mp4

07:01

9. Compound Index.mp4

06:20

10. Prefixes in Compound Index.mp4

05:13

11. Multikey Index.mp4

08:36

12. Covered Query.mp4

07:51

13. Text Index.mp4

08:56

14. 2d Index.mp4

14:39

15. 2dsphere Index.mp4

25:25

16. Hashed Index.mp4

05:32

17. Wildcard Indexes.mp4

12:39

18. Overview of Index Properties.mp4

02:14

19. TTL Index.mp4

08:07

20. Unique Index.mp4

08:51

21. Partial Index.mp4

12:27

22. Case Insensitive Index.mp4

12:49

23. Hidden Index.mp4

13:53

24. Sparse Index.mp4

06:45

25. dropIndexes() Method.mp4

08:54

26. totalIndexSize() Method.mp4

03:57

27.1 PRACTICE - 14.1 to 14.26 - MongoDB Indexes.pdf

27.2 SLIDES 14.1 to 14.26 - MongoDB Indexes.pdf

27. SLIDES and PRACTICE - MongoDB Indexes.html

15. Performance Tuning in MongoDB

1. Overview of Performance Tuning in MongoDB.mp4

01:44

2. Database Profiler.mp4

01:50

3. Setup Database Profiling.mp4

02:29

4. Database Profiling Commands.mp4

10:06

5. system.profile Collection.mp4

13:07

6. Index Strategies.mp4

14:05

7. cursor.explain() Method.mp4

04:35

8. queryPlanner Explain Mode.mp4

06:30

9. executionStats Explain Mode.mp4

07:49

10. allPlansExecution Explain Mode.mp4

13:09

11. Explain Result without an Index.mp4

09:23

12. Explain Result with an Index.mp4

13:32

13.1 PRACTICE - 15.1 to 15.12 - Performance Tuning with Indexes.pdf

13.2 SLIDES 15.1 to 15.12 - Performance Tuning with Indexes.pdf

13. SLIDES and PRACTICE - Performance Tuning in MongoDB.html

16. MongoDB Replication

1. Introduction to MongoDB Replication.mp4

04:59

2. Primary, Secondary and Arbiter.mp4

04:24

3. Automatic Failover.mp4

04:51

4. Oplog.mp4

05:05

5. Initiate a Replica Set - rs.initiate() Method.mp4

04:26

6. rs.status() Method.mp4

02:59

7. Build 3 Node Replica Set.mp4

38:16

8. Primary Election Process.mp4

06:24

9. Journaling.mp4

04:21

10. Write Concern.mp4

04:48

11. Write Concern Specification.mp4

11:20

12. Read Preference.mp4

10:39

13. Read Preference Modes.mp4

09:13

14. Add Members to the Replica Set.mp4

15:22

15. Add an Arbiter to the Replica Set.mp4

11:53

16. Remove Member from the Replica Set.mp4

11:00

17. Replica Set Configuration - rs.conf() Method.mp4

02:51

18. rs.reconfig() Method.mp4

03:30

19. Priority 0 Replica Set Member.mp4

03:34

20. Prevent Secondary from becoming Primary.mp4

08:01

21. Force a Member to become Primary.mp4

07:02

22. Hidden Replica Set Member.mp4

02:27

23. Configuring Hidden Member.mp4

04:44

24. Votes.mp4

02:29

25. Configuring non-Voting Member.mp4

04:59

26. Delayed Replica Set Member.mp4

02:20

27. Configure a Delayed Member.mp4

08:14

28. Change an Oplog Size.mp4

15:01

29. Chained Replication.mp4

07:20

30. Configuring Secondarys Sync Target.mp4

06:52

31. rs.printSecondaryReplicationInfo() Method.mp4

03:03

32. rs.printReplicationInfo() Method.mp4

02:55

33. rs.stepDown() Method.mp4

05:22

34. rs.freeze() Method.mp4

03:36

35. Replica Set Member States.mp4

06:28

36.1 PRACTICE - 16.1 to 16.35 - MongoDB Replication.pdf

36.2 SLIDES 16.1 to 16.35 - MongoDB Replication.pdf

36. SLIDES and PRACTICE - MongoDB Replication.html

17. MongoDB Security

1. Introduction to MongoDB Security.mp4

03:04

2. Authorization, Authentication and Encryption.mp4

05:24

3. Understanding Roles and Users.mp4

04:48

4. Localhost Exception.mp4

02:31

5. User Creation db.createUser() Method.mp4

13:59

6. SCRAM Authentication Mechanism.mp4

03:31

7. Enable Access Control (Authorization).mp4

15:15

8. Internal Authentication.mp4

05:22

9. Enforce keyfile Authentication on Existing Replica Set (With Downtime).mp4

21:32

10. Enforce keyfile Authentication on Existing Replica Set (No Downtime).mp4

34:36

11. Built-in Roles.mp4

09:05

12. User Defined Roles db.createRole() Method.mp4

11:33

13. db.getRole() and db.getRoles() Methods.mp4

12:02

14. db.getUser() and db.getUsers() Methods.mp4

06:26

15. db.grantRolesToUser() Method.mp4

04:53

16. db.revokeRolesFromUser() Method.mp4

04:09

17. db.grantPrivilegesToRole() Method.mp4

06:12

18. db.revokePrivilegesFromRole() Method.mp4

06:59

19. db.revokeRolesFromRole() Method.mp4

03:40

20. db.grantRolesToRole() Method.mp4

04:00

21. db.updateUser() Method.mp4

08:43

22. db.updateRole() Method.mp4

10:54

23. db.dropUser() and db.dropAllUsers() Methods.mp4

04:31

24. db.dropRole() and db.dropAllRoles() Methods.mp4

05:04

25. Change User Password.mp4

05:37

26. Collection Level Access Control.mp4

03:47

27.1 PRACTICE - 17.1 to 17.26 - MongoDB Security.pdf

27.2 SLIDES 17.1 to 17.26 - MongoDB Security.pdf

27. SLIDES and PRACTICE - MongoDB Security.html

18. MongoDB Database Tools

1. Introduction to MongoDB Database Tools.mp4

02:37

2. Installation of MongoDB Database Tools.mp4

04:20

3. mongodump.mp4

04:37

4. mongodump Examples.mp4

10:47

5. mongorestore.mp4

04:12

6. mongorestore Examples.mp4

13:02

7. bsondump.mp4

03:03

8. bsondump Examples.mp4

06:22

9. mongoexport.mp4

02:39

10. mongoexport Examples.mp4

12:23

11. mongoimport.mp4

04:27

12. mongoimport Examples.mp4

13:49

13. mongostat.mp4

04:07

14. mongostat Examples.mp4

08:46

15. mongotop.mp4

02:36

16. mongotop Examples.mp4

05:33

17.1 PRACTICE - 18.1 to 18.16 - MongoDB Database Tools.pdf

17.2 SLIDES 18.1 to 18.16 - MongoDB Utilities.pdf

17. SLIDES and PRACTICE - MongoDB Database Tools.html

19. MongoDB Storage

1. Introduction to Storage and Storage Engine.mp4

02:08

2. WiredTiger Storage Engine.mp4

07:49

3. In-Memory Storage Engine.mp4

06:32

4. GridFS.mp4

09:15

5. GridFS mongofiles.mp4

14:01

6.1 PRACTICE - 19.1 to 19.5 - MongoDB Storage Engines.pdf

6.2 SLIDES 19.1 to 19.5 - MongoDB Storage Engines.pdf

6. SLIDES and PRACTICE - MongoDB Storage.html

20. MongoDB Sharding

1. Introduction to MongoDB Sharding.mp4

06:45

2. Shards.mp4

01:47

3. Config Server.mp4

02:17

4. mongos (Router).mp4

02:28

5. Shard Key.mp4

04:42

6. Sharding Architecture.mp4

03:44

7. Choosing a Shard Key.mp4

08:29

8. Hashed Sharding.mp4

04:14

9. Ranged Sharding.mp4

03:49

10. Overview of Sharding Setup.mp4

05:25

11. Setup 2 Shard Replica Sets.mp4

15:28

12. Setup Config Server Replica Set.mp4

06:56

13. Setup mongos Router.mp4

04:54

14. Add Shard 1 to the Sharded Cluster (Converting Replica Set to Sharded Cluster).mp4

06:43

15. Shard a Collection.mp4

08:33

16. Check the Status of Sharded Cluster sh.status() Method.mp4

04:13

17. Balancer Process.mp4

03:15

18. Add Shard 2 to the Sharded Cluster.mp4

04:48

19. Balancer State sh.getBalancerState() Method.mp4

01:37

20. sh.setBalancerState() Method.mp4

02:43

21. sh.isBalancerRunning() Method.mp4

02:06

22. sh.stopBalancer() Method.mp4

02:08

23. sh.startBalancer() Method.mp4

02:10

24. Chunks and Jumbo Chunk.mp4

04:58

25. Overview of Split Chunks.mp4

02:46

26. sh.splitAt() Method.mp4

07:54

27. sh.splitFind() Method.mp4

06:37

28. Merge Chunks with mergeChunks Command.mp4

05:29

29. Migrating a Chunk using moveChunk Command (or sh.moveChunk() Method).mp4

10:30

30. Modify Chunk Size.mp4

07:23

31. Primary Shard and movePrimary Command.mp4

08:46

32. sh.balancerCollectionStatus() Method.mp4

03:41

33. sh.disableBalancing() and sh.enableBalancing() Methods.mp4

04:51

34. sh.disableAutoSplit() and sh.enableAutoSplit() Methods.mp4

05:26

35. Changing a Shard Key.mp4

01:48

36. Refining a Shard Key.mp4

07:52

37. Reshard a Collection.mp4

11:03

38. Back Up Sharded Cluster Metadata.mp4

09:55

39. Remove Shards from an Existing Sharded Cluster.mp4

11:07

40. Config Database.mp4

11:56

41. What If mongos become unavailable.mp4

01:52

42. What If Single member of Shard becomes unavailable.mp4

01:43

43. What If All members of Shard become unavailable.mp4

01:20

44. What If Single member of Config Replica Set become unavailable.mp4

01:56

45.1 PRACTICE - 20.1 to 20.44 - Build 2 shards Sharded Cluster.pdf

45.2 PRACTICE - 20.1 to 20.44 - MongoDB Sharding.pdf

45.3 SLIDES 20.1 to 20.44 - MongoDB Sharding.pdf

45. SLIDES and PRACTICE - MongoDB Sharding.html

21. MongoDB Administration

1. Overview of MongoDB Administration.mp4

00:57

2. MongoDB Version Upgrade.mp4

12:59

3. DEMO Upgrade a Replica Set v4.4.17 to v5.0.13.mp4

29:06

4. DEMO Upgrade a Replica Set v5.0.13 to v6.0.2.mp4

22:31

5. MongoDB Version Upgrade Approach for Sharded Cluster.mp4

07:30

6. db.currentOp() and db.killOp() and cursor.maxTimeMS() Methods.mp4

12:43

7. Recover a Standalone using -- repair.mp4

03:18

8. Compact Operation.mp4

05:44

9. MongoDB Log Rotation.mp4

06:15

10. db.setLogLevel() Method.mp4

03:44

11. Statistics and Informative Methods.mp4

22:07

12. Rename a Collection.mp4

04:05

13. allowDiskUse() Method.mp4

03:17

14. db.fsyncLock() and db.fsyncUnlock() Methods.mp4

05:49

15. db.shutdownServer() Method.mp4

05:29

16. Convert Command-Line Options to YAML.mp4

08:18

17. System Collections.mp4

04:29

18. Operations Checklist for Production MongoDB Deployment.mp4

12:04

19. MongoDB Limits and Thresholds.mp4

14:01

20. Help() Methods.mp4

03:46

21.1 PRACTICE - 21.1 to 21.20 - MongoDB Administration.pdf

21.2 SLIDES 21.1 to 21.20 - MongoDB Administration.pdf

21. SLIDES and PRACTICE - MongoDB Administration.html

22. Conclusion

1. Congratulations and Thank you!.mp4

01:05

Description

Master MongoDB Development and Administration. CRUD, Aggregation, Indexes, Replication, Sharding, Security, MongoDB 6.0!

What You'll Learn?

Perform Full-fledged MongoDB Design, Architecture and Administration with most recent MongoDB version 6.0.
Understand in-depth MongoDB Replication for High Availability and Replica Set management
Understand in-depth MongoDB Sharding for Horizontal Scaling and related concepts
Understand and Work on MongoDB Security with Role based Access Control
Learn in-depth CRUD (Create, Read, Update, Delete) operations and write efficient queries with various Query Operators
Understanding in-depth Aggregation Pipeline and perform various aggregation queries with variety of Expression Operators
Understand and Create MongoDB supported Indexes and related properties including special MongoDB Indexes - Multikey Index, Text Index, Geospatial Indexes
Understand and perform MongoDB Query Performance Tuning using Profiling and Explain Methodology
Understand and Use MongoDB Database tools - mongodump, mongorestore, mongoexport, mongoimport, mongotop, mongostat, bsondump, mongofiles
Understand the concept of Data Modeling, Schema Validations and Storage Engines in MongoDB
Perform MongoDB Administration and Maintenance Operations
Build strong basics around MongoDB key concepts with easy to understand format

Who is this for?

Data Scientists, Data Architects, Database Designer, Database Administrators, or Developers, who plan on (or are already) working with MongoDB

All Beginners or Advanced users who wants to explore all MongoDB features

Any professional or student who is looking for new add-ons to their skill sets

Anyone who is managing NoSQL projects or wants to learn NoSQL databases

More details

Description
Join this MongoDB course to learn all about this extremely popular database and query language from the ground up, in great detail and with many practical examples!

MongoDB is one of the most important NoSQL databases you can work with these days. MongoDB is able to handle large volumes of data while maximizing performance and adopt a flexible schema approach, giving you ultimate flexibility when modelling data.

In this course, you'll learn all about MongoDB from scratch. No prior MongoDB or database experience is required!

The curriculum is comprehensive and is designed to take you from beginner to advance level.

In detail, you'll learn:
â€¢ ... how to architect, design and administrate the MongoDB database system with most recent version 6.0
â€¢ ... how to install and use MongoDB locally on Windows and Linux OS
â€¢ ... how to implement High Availability in MongoDB using replica set and work with it
â€¢ ... how to implement High Scalability in MongoDB using Sharding feature and work with it
â€¢ ... how to perform Data Modeling efficiently
â€¢ ... how to enforce data Security on database instances and work with it
â€¢ ... how to work with various Database Tools available for backup/restore and statistics purposes
â€¢ ... how to perform CRUD (Create, Read, Update, Delete) operations on MongoDB databases
â€¢ ... how to filter data efficiently
â€¢ ... how to work with the Mongo Shell
â€¢ ... how to work with various types of Indexes in MongoDB
â€¢ ... how to increase query performance by using indexes (and how to use the right indexes!)
â€¢ ... how to use the amazing "Aggregation Framework" that's built into MongoDB
â€¢ ... and much more!

This course is a hands-on course - you'll learn by working alongside with me. We'll work on a wide variety of example data and use-cases and by the end of the course, you'll have all the knowledge you need to work with MongoDB in your next project!

Who this course is for:
Data Scientists, Data Architects, Database Designer, Database Administrators, or Developers, who plan on (or are already) working with MongoDB
All Beginners or Advanced users who wants to explore all MongoDB features
Any professional or student who is looking for new add-ons to their skill sets
Anyone who is managing NoSQL projects or wants to learn NoSQL databases

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MongoDB

Firoj Atar

Instructor's Courses

I am Firoj Atar and I love to guide the people who are on learning path. I am working as Data Scientist on NoSQL front and have a passion of learning and teaching. I have strong 10+ years of working experience on the NoSQL databases. I have been working on most renowned databases like MongoDB, Elasticsearch, Redis, Neo4J, Cassandra and list continues..Join me in any of my courses and you will get real knowledge based on the deep understanding of every single topic.Let's connect in the Social Networks! All links you could find under the profile picture.See you on my courses!

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