01
NoSQL foundations and MongoDB setup
Explain and apply documents, BSON, collections, ObjectId, flexible schema, access patterns to a tested, privacy-safe solution.
- NoSQL foundations and MongoDB setup60 min
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DBS-210Intermediate
Databases
NoSQL & MongoDB Data Modelling
Design, query and maintain document databases using realistic learner and service data.
Part of these pathways
Course outline: enrolment opens after THNF content and assessment review.
What you will be able to do
Clear outcomes. Practical evidence.
- Model document data
- Choose embedding or references
- Write queries and aggregations
- Apply validation and indexes
Course structure
Modules and lessons
02
Documents, collections and CRUD
Explain and apply insert/find/update/delete, projections, operators, upsert to a tested, privacy-safe solution.
- Documents, collections and CRUD60 min
03
Embedding, references and schema design
Explain and apply one-to-few, one-to-many, lifecycle, duplication, document growth to a tested, privacy-safe solution.
- Embedding, references and schema design60 min
04
Queries and atomic updates
Explain and apply comparison/logical/array operators, positional updates, $inc, findOneAndUpdate to a tested, privacy-safe solution.
- Queries and atomic updates60 min
05
Aggregation pipelines
Explain and apply $match, $project, $unwind, $group, $lookup, $sort, $facet to a tested, privacy-safe solution.
- Aggregation pipelines60 min
06
Indexes and query performance
Explain and apply single/compound/multikey/text indexes, explain, selectivity, ESR guideline to a tested, privacy-safe solution.
- Indexes and query performance60 min
07
Validation and consistency
Explain and apply $jsonSchema, required fields, enums, unique indexes, transactions to a tested, privacy-safe solution.
- Validation and consistency60 min
08
Security, backup and recovery
Explain and apply authentication, roles, network exposure, TLS, mongodump/restore, redaction to a tested, privacy-safe solution.
- Security, backup and recovery60 min
09
Application integration
Explain and apply driver lifecycle, connection pooling, timeouts, repository, pagination to a tested, privacy-safe solution.
- Application integration60 min
10
Capstone community data platform
Explain and apply access patterns, model, validation, indexes, pipelines, security, recovery to a tested, privacy-safe solution.
- Capstone community data platform60 min
Access and progression
Know what the course requires.
The required capability matters; the learner does not have to personally own every device.
Who it is for
Aspiring developers, technical learners, career changers and practitioners seeking applied computing skills.
Hardware access
Personal 64-bit computer with 4 GB RAM and 20 GB free, or use the required device and software at a readiness-approved THNF centre.
Software and practical access
Course software is available through the text-first pack, an approved offline installer or a readiness-approved THNF centre.
Possible progression
Junior development, data, web, application-support or technical-project progression appropriate to the completed portfolio.
Progression is not a guarantee of employment or external certification.Sierra Leone context
Mobile-first, low-data solutions for Sierra Leonean schools, traders, transport, agriculture, NGOs and SMEs using synthetic local names, districts and NLe values.
Skills in context
Career directions and next steps
These are realistic directions that the skills can support—not promises of employment, job titles or external certification.
- Junior data assistant
- Database-support assistant
- Reporting and information assistant
Possible progression pathways
Data and databases