Table joins Study guides, Class notes & Summaries

What is table ? correct answers The table is a collection of record and its information at a single view. What are different types of statements supported by SQL? correct answers 1. DDL - Used to create tables, views etc 2. DML - These statements are used to manipulate the data in records 3. DCL (Data Control Language)- These statements are used to set privileges such as Grant and Revoke database access permission to the specific user. Different clauses in SQL correct answers Usage...

What does modality refer to? How does it appear on ER diagram? - ANSWERRefers to the MINIMUM number of times an instance in one entity can be associated with instance of another entity (minima) Appears as a 0 or 1 on the relationship line, next to cardinality Define: Referential Integrity - ANSWER- Requires that ALL foreign key values must either be fully NULL or match some primary key value 4 Ways Referential Integrity can be violated: - ANSWER- 1. Primary key is updated 2. Foreign key i...

CDW110 EXAM 2023-2024 EXAM QUESTIONS AND VERIFIED ANSWERS|A GRADE Q: What are some of the pros of Caboodle being a dimensional data model? Answer: Intuitive, quicker to write a report, quicker run times due to fewer tables and joins Q: What is the downside of Caboodle being a dimensional data model? Answer: More complicated ETL process to maintain Q: Star schema Answer: Fact table surrounded by and linked to dimensions Q: Where is the Caboodle data dictiona...

Tableau Desktop Specialist Exam Questions and Answers 2024/2025 Score A+. Which of the following is the best reason to create a saved data source as a .TDS file? a. Those who wish to use the data do not have access to the underlying data. b. You want to save the default field properties such as number formats and sort order. c. You want to save a snapshot of the data that will not update even when the underlying data changes. d. You need to apply an aggregation that takes too long when ...

Data Management Applications C170 What is a table? A table is a persistent representation of a logical relation that is a relation whose contents can be saved for permanent use. What are the characteristics of a relational table? The characteristics of a relational table are that a table is perceived as a two-dimensional structure composed of rows and columns, each row (tuple) represents a single entity occurrence within the set, each column represents an attribute, each column has a dis...

AFAA Primary Group Exercise Certification Exam (Latest 2024 / 2025 Update) 100% Correct | Questions and Verified Answers | Grade A Q: Explain why ballistic movements can be dangerous. Answer: When ballistic movements are used, the muscle spindles sense the quick changes in muscle length and cause a muscular contraction. Q: List 6 classes of nutrients. Answer: Water Carbs Protein Fat Vitamins Minerals Q: List the different types of carbohydrates and give examples of each. Answer: Simple - Sugars ...

Tableau Desktop Specialist Exam Questions and Answers 2024/2025 Score A+. Which of the following is the best reason to create a saved data source as a .TDS file? a. Those who wish to use the data do not have access to the underlying data. b. You want to save the default field properties such as number formats and sort order. c. You want to save a snapshot of the data that will not update even when the underlying data changes. d. You need to apply an aggregation that takes too long when ...

Tableau Desktop Specialist Exam Questions and Answers Latest Update 2024 /2025 - Scored A+. Which of the following is the best reason to create a saved data source as a .TDS file? a. Those who wish to use the data do not have access to the underlying data. b. You want to save the default field properties such as number formats and sort order. c. You want to save a snapshot of the data that will not update even when the underlying data changes. d. You need to apply an aggregation that tak...

Tableau Desktop Specialist Exam Questions and Answers Latest Update 2024 /2025 (Scored A+) TDS files save the data source metadata, such as the connection information, default field formatting, and sort order. They do not save the data source itself, and hence you should use this format if everyone who will use the data source has access to the underlying file or database defined in the connection information. When creating a union between tables, what will happen if the field names do not...

Tableau Desktop Specialist Exam Questions and Answers 2024/2025 Score A+. Which of the following is the best reason to create a saved data source as a .TDS file? a. Those who wish to use the data do not have access to the underlying data. b. You want to save the default field properties such as number formats and sort order. c. You want to save a snapshot of the data that will not update even when the underlying data changes. d. You need to apply an aggregation that takes too long when ...