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Daily Note for March 10, 2026 Past Lesson

We are revising for our test coming up: 

  1. ✅ A3.1.1 Explain the features, benefits and limitations of a relational database.
  2. ✅ A3.2.1 Describe database schemas.
  3. ✅ A3.2.2 Construct ERDs.
  4. ✅ A3.2.3 Outline the different data types used in relational databases.
  5. ✅A3.2.4 Construct tables for relational databases.
  6. ✅A3.2.5 Explain the difference between normal forms. (video here, but please only watch up to 3nf)
  7. ✅ A3.2.6 Construct a database normalized to 3NF for a range of real-world scenarios.
  8. ✅A3.2.7 Evaluate the need for denormalizing databases.

== test 12 March 2026 (Thursday) == 

  1. A3.3.1 Outline the differences between data language types within SQL.
  2. A3.3.2 Construct queries between two tables in SQL.
  3. A3.3.3 Explain how SQL can be used to update data in a database.
  4. A3.3.4 Construct calculations within a database using SQL’s aggregate functions. (HL only) HL
  5. A3.3.5 Describe different database views. (HL only) HL
  6. A3.3.6 Describe how transactions maintain data integrity in a database. (HL only) HL

== test ==

  1. A3.4.1 Outline the different types of databases as approaches to storing data. (HL only) HL
  2. A3.4.2 Explain the primary objectives of data warehouses in data management and business intelligence. (HL only) HL
  3. A3.4.3 Explain the role of online analytical processing (OLAP) and data mining for business intelligence. (HL only) HL
  4. A3.4.4 Describe the features of distributed data