What is this programme?
The Database Design & SQL Certificate from ecertificate.pro is an independent, self-paced online program covering relational modeling, normal forms, indexing strategy, join execution, transaction isolation and query optimization on PostgreSQL and MySQL. It runs about 28 hours and ends with a scenario-based online assessment; on passing, the certificate is delivered inside your private ecertificate.pro panel and carries a unique verification code that can be checked only in the ecertificate.pro database. ecertificate.pro has published independent online vocational programs since 2016. This certificate is not government-approved and not officially accredited by any national education authority, and it does not grant a licence, protected title or legal qualification of any kind. It is not a promise of employment; it records that you finished a defined syllabus and passed its assessment. Hiring teams may read it as supporting evidence of practical SQL ability alongside your own projects and a technical interview.
Who it is for
Back-end and full-stack developers who write SQL every week but have never designed a schema from scratch; data analysts moving from spreadsheet exports to warehouse queries; QA, support and operations engineers who read production tables; and self-taught programmers who can filter and sort rows yet have never chosen an index or read a query plan.
What you will be able to do
- Translate written business rules into a normalized relational schema with declared keys, foreign keys and CHECK constraints instead of application-side validation alone.
- Apply 1NF through BCNF to eliminate insert, update and delete anomalies, and argue for a specific denormalization when a read pattern justifies it.
- Write set-based SQL using window functions, recursive CTEs, LATERAL and anti-joins in place of row-by-row loops in application code.
- Design composite, partial, expression and covering indexes, order their columns by predicate shape and selectivity, and quantify the write cost each one adds.
- Read EXPLAIN ANALYZE output and name the cause of a slow query: sequential scan, cardinality misestimate, wrong join algorithm, non-sargable predicate or missing statistics.
- Choose an isolation level for a given workload, reproduce lost update and write skew on purpose, and prevent them with locking, a version column or a retry loop.
- Run a schema migration on a live table without a long outage, and restore a database to a chosen point in time from backups and write-ahead logs.
Modules
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1
Relational Modeling from Business Rules
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2
Normal Forms and Controlled Denormalization
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3
Data Types, Constraints and Schema Evolution
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4
Joins, NULL Semantics and Set-Based SQL
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5
Indexing Strategy and Storage Internals
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6
Query Plans and Optimization
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7
Transactions, Isolation and Concurrency
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8
Security, Backup and Growing Data
How it works
Learning format
Self-paced written material, downloaded from your dashboard. No fixed schedule and no live sessions — you work through it when it suits you.
Material delivery
Everything appears in your dashboard as soon as your payment is confirmed. Files are served only to your signed-in session.
Prerequisites
You should be able to write a SELECT with a WHERE clause and know what a table, row and column are. No prior modeling, administration or tuning experience is assumed, and no maths beyond arithmetic is required. You will need a local PostgreSQL or MySQL server, a Docker container being the quickest route, plus any SQL client such as psql, the MySQL CLI, DBeaver or DataGrip.
Completion
Work through the eight modules and their lab exercises at your own pace, then sit a timed online assessment built from real scenarios: normalize a supplied schema, pick indexes for a stated query workload, and diagnose a locking incident from a plan and a lock report. Reach the pass mark and the certificate, with its unique verification code, appears in your private ecertificate.pro panel within minutes.
Your certificate
Once your completion is confirmed, we prepare your certificate and upload it to your dashboard, normally within 24–48 hours. You receive an e-mail as soon as it is there — you never have to chase it.
Refunds
Because the material is delivered digitally and immediately, purchases are non-refundable once the files have been made available to your account. The full terms are in our Refund Policy.
