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Top 40 Teradata Questions

Questions 1 to 10
1. Difference between Teradata and Other RDBMS?
2. Draw the picture of Teradata warehouse?
3. What are the differences between Star schema and Snow flake schema?
4. Differentiate Dimension table and Fact table?
5. What is Fact less fact table?
6. Describe the different types of dimension tables? And explain with
Examples?
7. Explain Teradata important components with architecture?
8. Difference between SMP and MPP?
9. Explain the Shared nothing architecture?
10.What is a set table? When we will use multiset table?

Questions 11 to 20
11.What is the usage of Fallback?
12.How many primary keys we will apply on a table?
13.How does rows store in Teradata?
14.Tell me the types of Indexes?
15.Difference between UPI and NUPI and the situation where exactly
We will use these.?
16.The role of SI in teradata and explain the types?
17. How do we create a join and hash indexes and explain the scenerios?
When we will use exactly?
18.What is the meaning of Transient journal overhead?
19.What is skewness in teradata?
20.What is a subtable and when it requires?

Questions 21 to 30
21.What is the usage of coalesce function?
22.When we will use null-if function?
23. Can you write the syntax of substring and case expression.?
24.What are the different types of tables?
25.Explain the differences between global temporary table and volatile table?
26.Describe the use of Explain command and its features?
27.Have you collected statistics in your project?
28.Difference between FastLoad and Multiload?
29.Difference between BTEQ export and Fast Export?
30.Difference between general Delete and Multiload delete?

Questions 31 to 40
31.What is the structure for importing a file in BTEQ?
32.What is the structure for importing a file in Fastload?
33.What is the structure for importing a file in Multiload?
34.What is the structure for importing a file in Tpump?
35.How do you pass multiple files in fastload and multiload?
36.Explain different phases of fastload?
37.Explain the phases in multiload?
38.Describe the error tables in fastload with structures?
39.Describe the error tables in multiload with structures?
40.Difference between multiload and Tpump?

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