Foundations
145 exercises in Foundations for Databases & SQL. Topics: Aggregate Functions, Columns, Data Integrity, Data Types.
Scored questions use recorded source keys. Ungraded exercises support self-checking. Some items lack explanations or require review; practice scores do not establish exam readiness. No account is required.
Topics in this chapter
- Aggregate Functions — 5 exercises · Read the source lesson
- Columns — 5 exercises · Read the source lesson
- Data Integrity — 5 exercises · Read the source lesson
- Data Types — 5 exercises · Read the source lesson
- Database Normalization — 5 exercises · Read the source lesson
- Database Security — 5 exercises · Read the source lesson
- DELETE: Removing Rows — 5 exercises · Read the source lesson
- Foreign Keys — 5 exercises · Read the source lesson
- GROUP BY: Summaries per Group — 5 exercises · Read the source lesson
- Indexes — 5 exercises · Read the source lesson
- INSERT — 5 exercises · Read the source lesson
- JOIN — 5 exercises · Read the source lesson
- LIMIT — 5 exercises · Read the source lesson
- Many-to-Many — 5 exercises · Read the source lesson
- One-to-Many — 5 exercises · Read the source lesson
- One-to-One — 5 exercises · Read the source lesson
- ORDER BY — 5 exercises · Read the source lesson
- Primary Keys — 5 exercises · Read the source lesson
- Relational Databases — 5 exercises · Read the source lesson
- Relationships — 5 exercises · Read the source lesson
- Rows: One Record at a Time — 5 exercises · Read the source lesson
- SELECT — 5 exercises · Read the source lesson
- SQL Basics — 5 exercises · Read the source lesson
- Subqueries — 5 exercises · Read the source lesson
- Tables — 5 exercises · Read the source lesson
- Transactions: All-or-Nothing Operations — 5 exercises · Read the source lesson
- UPDATE: Changing Existing Rows — 5 exercises · Read the source lesson
- What a Database Is — 5 exercises · Read the source lesson
- WHERE: Filtering Rows — 5 exercises · Read the source lesson
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