Type the number

Exercise and reference answers

Questions

1. Answer

   4

   Question

   Sublanguages implemented by SQL

2. Answer

   1970

   Question

   Year Codd proposed the relational model

3. Answer

   1

   Question

   Primary keys a table may have

4. Answer

   2

   Question

   Relations a binary set operator takes

5. Answer

   4

   Question

   Letters in the ACID acronym

6. Answer

   2

   Question

   Attributes in a candidate key of plate plus state

Instructions

Type the number only.

Explanation