Guided Course · Phases 09–11

Prisma 7 — ORM, Migrations & Data Modeling

Use Prisma without losing sight of the SQL schema, migration risk, and database behavior underneath.

Track project: Add Prisma without Losing the Database Mental Model. Finish the lessons, then close the transcript and build the project using evidence instead of copy-paste. Open project →
01

Prisma Schema Anatomy

Here’s the simple reason this matters: This lesson is about Prisma Schema Anatomy. Keep the idea practical: in the Prisma/database mapping and migration workflow, the worked example should show that generator, datasource, model fields, defaults, native type hints, and table/column mappings are all explicit in one schema. Once you can explain why that happens, the name is much easier to remember. We connect it to the course project so you can see the idea working instead of memorizing a definition.

≈ 2033 words
02

Generated Prisma Client

Here’s the simple reason this matters: This lesson is about Generated Prisma Client. Keep the idea practical: in the Prisma/database mapping and migration workflow, the worked example should show that the generated client exposes typed model operations based on the current Prisma schema. Once you can explain why that happens, the name is much easier to remember. We connect it to the course project so you can see the idea working instead of memorizing a definition.

≈ 1976 words
03

PrismaService in NestJS

Here’s the simple reason this matters: This lesson is about PrismaService in NestJS. Keep the idea practical: in the Prisma/database mapping and migration workflow, the worked example should show that nest can inject one Prisma client wrapper and close its connections cleanly during shutdown. Once you can explain why that happens, the name is much easier to remember. We connect it to the course project so you can see the idea working instead of memorizing a definition.

≈ 1979 words
04

First Task Model

Here’s the simple reason this matters: This lesson is about First Task Model. Keep the idea practical: in the Prisma/database mapping and migration workflow, the worked example should show that the ORM model expresses the same identity, workspace ownership, status, and naming decisions as the relational design. Once you can explain why that happens, the name is much easier to remember. We connect it to the course project so you can see the idea working instead of memorizing a definition.

≈ 2025 words
05

Development Migrations

Here’s the simple reason this matters: A migration is a versioned database change. The important skill is understanding the SQL and rollout risk, not merely running an ORM command. In this course, we connect it directly to the Prisma layer that maps application code to PostgreSQL while keeping migrations explicit, so you can see where the idea lives in a real project instead of memorizing a definition.

≈ 1849 words
06

Inspect Generated SQL

Here’s the simple reason this matters: This lesson is about Inspect Generated SQL. Keep the idea practical: in the Prisma/database mapping and migration workflow, the worked example should show that you review the actual database operations Prisma intends to run rather than treating the migration command as magic. Once you can explain why that happens, the name is much easier to remember. We connect it to the course project so you can see the idea working instead of memorizing a definition.

≈ 2015 words
07

Relations

Here’s the simple reason this matters: This lesson is about Relations. Keep the idea practical: in the Prisma/database mapping and migration workflow, the worked example should show that the relation maps the foreign-key field to the referenced model and expresses delete behavior. Once you can explain why that happens, the name is much easier to remember. We connect it to the course project so you can see the idea working instead of memorizing a definition.

≈ 1923 words
08

Indexes in Prisma

Here’s the simple reason this matters: An index is an additional data structure PostgreSQL maintains to make selected lookup and ordering patterns faster, at the cost of storage and write work. In this course, we connect it directly to the Prisma layer that maps application code to PostgreSQL while keeping migrations explicit, so you can see where the idea lives in a real project instead of memorizing a definition.

≈ 1902 words
09

Seed Data

Here’s the simple reason this matters: This lesson is about Seed Data. Keep the idea practical: in the Prisma/database mapping and migration workflow, the worked example should show that a repeatable seed creates a small realistic workspace and related tasks for local development/tests. Once you can explain why that happens, the name is much easier to remember. We connect it to the course project so you can see the idea working instead of memorizing a definition.

≈ 1953 words
10

Prisma Transactions

Here’s the simple reason this matters: A database transaction groups operations so they commit together or roll back together, protecting invariants when one business action touches multiple rows. In this course, we connect it directly to the Prisma layer that maps application code to PostgreSQL while keeping migrations explicit, so you can see where the idea lives in a real project instead of memorizing a definition.

≈ 1857 words
11

Dangerous Schema Changes

Here’s the simple reason this matters: A schema change is dangerous when old application code or existing rows cannot satisfy the new schema immediately. Safe rollouts often expand, backfill, verify, then contract. In this course, we connect it directly to the Prisma layer that maps application code to PostgreSQL while keeping migrations explicit, so you can see where the idea lives in a real project instead of memorizing a definition.

≈ 1898 words
12

Staged Backfills

Here’s the simple reason this matters: This lesson is about Staged Backfills. Keep the idea practical: in the Prisma/database mapping and migration workflow, the worked example should show that the process expands the schema, backfills deterministically, verifies completion, then tightens the constraint. Once you can explain why that happens, the name is much easier to remember. We connect it to the course project so you can see the idea working instead of memorizing a definition.

≈ 1958 words
13

Production Migration Strategy

Here’s the simple reason this matters: This lesson is about Production Migration Strategy. Keep the idea practical: in the Prisma/database mapping and migration workflow, the worked example should show that production migration is treated as a release procedure with compatibility and verification, not as an automatic local-development command. Once you can explain why that happens, the name is much easier to remember. We connect it to the course project so you can see the idea working instead of memorizing a definition.

≈ 2025 words
14

Query Shape and N+1

Here’s the simple reason this matters: N+1 happens when one query loads a list and then additional queries are issued per row. It often looks fine with small data and becomes expensive at scale. In this course, we connect it directly to the Prisma layer that maps application code to PostgreSQL while keeping migrations explicit, so you can see where the idea lives in a real project instead of memorizing a definition.

≈ 1994 words
15

Persistent Task CRUD

Here’s the simple reason this matters: This lesson is about Persistent Task CRUD. Keep the idea practical: in the Prisma/database mapping and migration workflow, the worked example should show that the CRUD operations are now persisted, scoped, and ready to be wrapped by API/business rules rather than living as in-memory arrays. Once you can explain why that happens, the name is much easier to remember. We connect it to the course project so you can see the idea working instead of memorizing a definition.

≈ 2059 words
Track knowledge check

Check the mental models before the project

Answer from memory. If two options sound similar, explain the boundary difference before choosing.

0/0 correct · 0/10 answered
01Which statement best explains “Prisma Schema Anatomy” in this track?
02Which statement best explains “Generated Prisma Client” in this track?
03Which statement best explains “PrismaService in NestJS” in this track?
04Which statement best explains “First Task Model” in this track?
05Which statement best explains “Development Migrations” in this track?
06Which statement best explains “Inspect Generated SQL” in this track?
07Which statement best explains “Relations” in this track?
08Which statement best explains “Indexes in Prisma” in this track?
09Which statement best explains “Seed Data” in this track?
10Which statement best explains “Prisma Transactions” in this track?
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Add Prisma without Losing the Database Mental Model

Map the known PostgreSQL design into Prisma, inspect generated SQL, and build persistent task operations safely.

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