[03/Charles/04]

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Questions and Answers

In the context of data vault modeling, what are examples of DV identifiers?

  • Surrogate keys, natural keys, candidate keys
  • Indexed keys, clustered keys, unique keys
  • Hash keys, business keys, sequences (correct)
  • Primary keys, foreign keys, composite keys

What are the actual structures used in data vault modeling?

  • Tables, views, indexes
  • Hubs, links, satellites (correct)
  • Dimensions, facts, measures
  • Entities, relationships, attributes

How are satellites split in data vault modeling?

  • According to data types, lengths, and formats
  • According to data sources, transformation logic, and storage
  • According to data access patterns, indexing, and querying
  • According to security, privacy, rate of change (correct)

Is the hash key algorithm MD5 commonly used in data vault modeling?

<p>True (A)</p> Signup and view all the answers

Are DV identifiers in data vault modeling typically hash keys, business keys, and sequences?

<p>True (A)</p> Signup and view all the answers

Are satellites in data vault modeling split according to security, privacy, and rate of change?

<p>True (A)</p> Signup and view all the answers

Match the following target platforms with their respective optimized implementation:

<p>Snowflake = Actual (optimized) implementation Synapse = Actual (optimized) implementation Oracle = Actual (optimized) implementation BigQuery = Actual (optimized) implementation</p> Signup and view all the answers

Match the following hash key algorithms with their use in data vault modeling:

<p>MD5 = Commonly used in data vault modeling SHA-1 = Commonly used in data vault modeling</p> Signup and view all the answers

Match the following structures with their use in data vault modeling:

<p>Hubs, links, satellites = Used in data vault modeling Common attributes (record source, load date, etc.) = Used in data vault modeling</p> Signup and view all the answers

In data vault modeling, which type of identifiers are commonly used?

<p>Hash keys, business keys, sequences (A)</p> Signup and view all the answers

What are the actual structures used in data vault modeling?

<p>Hubs, links, satellites (C)</p> Signup and view all the answers

How are satellites split in data vault modeling?

<p>According to security, privacy, rate of change (A)</p> Signup and view all the answers

What does a physical data model (PDM) typically include?

<p>Table names, column names, primary keys, and foreign keys (D)</p> Signup and view all the answers

What is the purpose of creating a physical data model (PDM)?

<p>Define the physical structure of the database and identify potential performance issues (C)</p> Signup and view all the answers

What is the database schema used for?

<p>Store and manage the data using the database management system (DBMS) (D)</p> Signup and view all the answers

How are physical data models (PDMs) typically created?

<p>Using database modeling tools to automate the process (C)</p> Signup and view all the answers

What do PDMs help organizations to achieve?

<p>Identify and resolve potential performance issues (A)</p> Signup and view all the answers

What does the database management system (DBMS) use the database schema for?

<p>Store and manage the data (D)</p> Signup and view all the answers

In the context of data vault modeling, which type of identifiers are commonly used?

<p>Hash keys, business keys, sequences (B)</p> Signup and view all the answers

What are the actual structures used in the implementation of data vault modeling?

<p>Hubs, links, satellites (D)</p> Signup and view all the answers

How are satellites split in data vault modeling?

<p>According to security, privacy, rate of change (B)</p> Signup and view all the answers

Physical data models (PDMs) are typically created before the logical data model is developed.

<p>False (B)</p> Signup and view all the answers

PDMs include information such as table names, column names, primary keys, and foreign keys.

<p>True (A)</p> Signup and view all the answers

PDMs are important for helping organizations identify and resolve potential performance issues.

<p>True (A)</p> Signup and view all the answers

Database modeling tools cannot help automate the process of creating and maintaining PDMs.

<p>False (B)</p> Signup and view all the answers

The database schema is used by the database management system (DBMS) to store and manage the data.

<p>True (A)</p> Signup and view all the answers

PDMs are used to create the database schema, which is the set of definitions for the database objects.

<p>True (A)</p> Signup and view all the answers

Match the following components with their inclusion in a physical data model (PDM):

<p>Table names and structures = Included in PDM Primary keys and foreign keys = Included in PDM Constraints and indexes = Included in PDM Data vault modeling = Not included in PDM</p> Signup and view all the answers

Match the following benefits with the use of physical data models (PDMs):

<p>Defining the physical structure of the database = Benefit of using PDMs Identifying and resolving potential performance issues = Benefit of using PDMs Automating the process of creating and maintaining PDMs = Benefit of using PDMs Styling web pages = Not a benefit of using PDMs</p> Signup and view all the answers

Match the following statements with their relevance to physical data models (PDMs):

<p>PDMs are used to create the database schema = Relevant to PDMs PDMs are typically created before the logical data model = Relevant to PDMs PDMs are important for database security = Not relevant to PDMs PDMs are used for client-side scripting = Not relevant to PDMs</p> Signup and view all the answers

Match the following tools with their usage in creating physical data models (PDMs):

<p>Database modeling tools = Used for creating PDMs Web development tools = Not used for creating PDMs Data analysis tools = Not used for creating PDMs Database management system (DBMS) = Not used for creating PDMs</p> Signup and view all the answers

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