Microsoft Power BI Certification Guide
·9 min read
Everything the PL-300 Power BI Data Analyst certification involves — what the credential is, exam format, cost, scoring, renewal and where it leads.
Continue readingThe strongest database certifications ranked — Oracle SQL and DBA tracks, Microsoft DP-300, MySQL 8.0, EDB PostgreSQL — with costs, formats and who each suits.

Every ranked list of database certifications hides an assumption: that one credential can be "best" for a performance-tuning DBA, a SQL-writing analyst, and a cloud engineer at the same time. It cannot. What follows is still a ranking — but ranked by the job each certification does best, using verifiable 2026 facts on cost, format and expiry rather than vague prestige scores. Where a figure could not be confirmed against an official page, we say so and point you to the source.
The five credentials that consistently justify their fee in 2026 are: the Oracle Database SQL Certified Associate (1Z0-071) for querying skills, Microsoft's Azure Database Administrator Associate (DP-300) for cloud-era administration, Oracle's Database Administration tracks (19c and 23ai) for deep on-prem DBA work, the Oracle Certified Professional: MySQL 8.0 Database Administrator (1Z0-908) for the open-source mainstream, and EDB's PostgreSQL certifications for the Postgres ecosystem. Here is how they compare and who should pick which.
Four criteria, weighted in this order:
No universal winner is crowned. The right pick depends on the database engine your employers run and the role you are aiming at.
The 1Z0-071 remains, as of August 2026, Oracle's standard entry SQL exam and the closest thing the industry has to a default SQL credential. It tests core SQL on Oracle Database — joins, subqueries, DML, DDL, set operators — rather than administration, which is exactly why it travels well: the skills transfer to any relational engine even though the exam is Oracle-branded.
Best for: analysts, developers and aspiring DBAs who need a recognised, permanent proof of SQL competence. Whether that proof is worth the fee in your specific situation is a separate question — the worth-it verdict on SQL certification works through the cost-benefit properly, and the best SQL certifications round-up compares the SQL-focused field in depth.
DP-300 covers administering SQL Server and Azure SQL relational databases, which is the shape of most database administration jobs being advertised today: hybrid estates, managed instances, cloud migration. It is active as of August 2026 with no retirement announced in our research.
Best for: DBAs in Microsoft shops and anyone whose employer is moving SQL Server workloads into Azure. Study for it alongside the exam's live objectives, and benchmark with DP-300 Administering Relational Databases on Microsoft Azure practice questions once you have covered the domains. If you are brand new to Microsoft's data stack, DP-900 Azure Data Fundamentals is the gentler on-ramp.
"Oracle DBA certification" in 2026 means one of two parallel tracks, and choosing between them is the decision most candidates get stuck on:
Each exam costs $245 USD (varies by region), and the credentials do not expire. Question counts and durations for 1Z0-082/083 specifically were not confirmable for 2026 — check the live Oracle pages before booking.
Which track? If your employer's estate runs 19c — extremely common — the 2019 Professional track maps directly onto your day job and carries the "Professional" title. If you are starting fresh or your organisation is adopting 23ai, the single-exam 1Z0-182 gets you credentialed faster. The full role-focused comparison, including non-Oracle options, lives in the best database administrator certifications guide.
Best for: career DBAs in Oracle shops, where these credentials remain the recognised ladder.
MySQL powers an enormous share of web applications, and 1Z0-908 remains its flagship DBA credential as of August 2026 — still coded to MySQL 8.0, with no 8.4 or 9.x successor exam confirmed. Related exams exist for developers (1Z0-909) and implementers (1Z0-922) if administration is not your lane.
Best for: administrators of LAMP-stack and web-scale estates, and developers formalising operational MySQL knowledge. The dedicated MySQL certification guide walks through the whole track — exams, cost and preparation — in detail, and MySQL 8.0 Database Administrator practice questions are useful for finding weak domains before exam day rather than for memorising answers.
PostgreSQL's popularity keeps climbing, but its certification story is unusual: there is no official certification from the PostgreSQL Global Development Group itself. EDB (EnterpriseDB) runs the best-known vendor programme, with Associate and Professional levels tagged to Postgres versions. A 2026 secondary-source summary of the EDB Professional describes roughly 60 multiple-choice questions in 90 minutes, a 70% pass mark, a $200 USD fee and a two-year credential — but those figures come from a single source, so confirm them on EDB's certification page before budgeting.
Best for: engineers whose employers have standardised on Postgres and who want the strongest available third-party validation. The fragmented Postgres credential landscape — and why "there is no official cert" is not the whole story — is unpacked in PostgreSQL certification options explained.
| Factor | Oracle SQL Associate (1Z0-071) | Microsoft DP-300 | Oracle DBA (19c / 23ai) | MySQL 8.0 DBA (1Z0-908) | EDB PostgreSQL |
|---|---|---|---|---|---|
| Difficulty | Entry–intermediate SQL | Intermediate admin | Intermediate–advanced | Intermediate | Intermediate |
| Prerequisites | None | None enforced | None mandatory (experience recommended) | None | None enforced |
| Cost (2026, USD list) | $245 | $165 | $245 per exam | $245 (free promo windows recur) | ~$200 (single source — verify) |
| Best for | Analysts, developers, SQL proof | Azure/SQL Server DBAs | Oracle-shop career DBAs | Web-stack MySQL admins | Postgres engineers |
| Career path | Analyst → developer → DBA | Cloud DBA / data platform | On-prem/hybrid Oracle DBA | Open-source DBA/DevOps | Postgres DBA/engineer |
| Core skills | SQL querying, DML/DDL | Azure SQL administration | Tuning, RAC, multitenant | MySQL ops and admin | Postgres admin |
| Renewal | Never expires | 1 year, free online renewal | Never expires | Never expires | ~2 years (verify) |
All prices are USD list prices and vary by country and taxes.
Answer three questions in order:
A realistic worked example: a SQL Server DBA with four years' experience whose company is migrating to Azure gets more from DP-300 than from anything Oracle offers — the syllabus mirrors her next two years of work and the fee is the lowest on the list. Her colleague maintaining a legacy Oracle 19c estate for a bank gets more from 1Z0-082/083, because that credential names the exact platform his employer pays him to keep alive.
If you are choosing your very first database credential with no experience at all, this list runs slightly ahead of you — the beginner-focused database certification rankings start from zero, and the wider database certifications explained overview maps the whole landscape before you commit.
Even the right credential can be bought badly. The patterns we see most often:
Neither wins universally; recognition follows the engine your employers run. Oracle's credentials dominate in Oracle-database shops and never expire; Microsoft's DP-300 dominates in SQL Server and Azure environments, costs less ($165 vs $245) and renews free online annually. Choose by job-market fit, not brand.
Not permanently at the levels covered here, but Oracle runs recurring limited-time promotions — its foundational OCI cloud certifications are free (training and exam attempt), and MySQL exams were free during the 2025 30th-anniversary window. Treat free windows as bonuses, not planning assumptions, and check Oracle University's blog for current offers.
No certification is formally required for DBA roles; experience carries more weight everywhere. Certifications work best as accelerators — getting career changers past CV screens, and giving practising DBAs a structured way to close gaps in areas like backup, recovery and performance tuning that day-to-day work may not exercise.
Usually one per engine you genuinely work with, at the highest level you can justify. Stacking overlapping credentials on the same engine adds little; pairing one database credential with an adjacent cloud or data-engineering skill adds a lot.
The best database certification is the one whose name appears in the job adverts you want to answer. In 2026 that means 1Z0-071 for portable SQL proof, DP-300 for Microsoft-and-Azure administration at the friendliest price and renewal terms, the Oracle 19c or 23ai tracks for career Oracle DBAs, 1Z0-908 for MySQL estates, and EDB for Postgres. Verify the volatile details — fees, formats, promotion windows — on the official pages linked below, because vendors change them without notice. Then pick one, book a date, and let the deadline do what browsing rankings never will.
Exam facts in this guide were checked against official certification-provider pages on . Fees, exam codes and policies change — confirm on the provider’s own site before you book.
Put it into practice
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