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Questions and Answers
What is the primary key in a relational database?
What is the primary key in a relational database?
A primary key is the attribute, or combination of attributes, that uniquely identifies a specific row in a table.
Explain what a foreign key is and how it is used in a relational database.
Explain what a foreign key is and how it is used in a relational database.
A foreign key is an attribute in one table that is also a primary key in another table and is used to link the two tables.
What problems can arise if data is stored in one large table in a relational database?
What problems can arise if data is stored in one large table in a relational database?
Update anomaly, Insert anomaly, Delete anomaly.
What is the significance of having a set of related tables in a relational database?
What is the significance of having a set of related tables in a relational database?
What are the rules for relational database design regarding primary keys and foreign keys?
What are the rules for relational database design regarding primary keys and foreign keys?
What is the purpose of normalization in relational database design?
What is the purpose of normalization in relational database design?
What is a file in the context of a database?
What is a file in the context of a database?
Define data analytics.
Define data analytics.
What are the advantages of using databases?
What are the advantages of using databases?
At what level of the database do different users have logical views of the data?
At what level of the database do different users have logical views of the data?
What is the physical view of the data in a database?
What is the physical view of the data in a database?
What do designers of a database need to understand in order to create an effective database?
What do designers of a database need to understand in order to create an effective database?
What is a schema at the conceptual level?
What is a schema at the conceptual level?
What is the purpose of access rights in a subschema?
What is the purpose of access rights in a subschema?
What is the role of a data dictionary in database design?
What is the role of a data dictionary in database design?
What is the function of Data Definition Language (DDL) in a DBMS?
What is the function of Data Definition Language (DDL) in a DBMS?
What does Data Manipulation Language (DML) do?
What does Data Manipulation Language (DML) do?
What is the purpose of Data Query Language (DQL)?
What is the purpose of Data Query Language (DQL)?
What approach involves using knowledge of business processes and information needs to create a database diagram?
What approach involves using knowledge of business processes and information needs to create a database diagram?
How do users retrieve specific information from a relational database without having to sort through all the files?
How do users retrieve specific information from a relational database without having to sort through all the files?
What are the Four V’s of Big Data?
What are the Four V’s of Big Data?
How do database systems expand accounting's ability to produce reports?
How do database systems expand accounting's ability to produce reports?
What does the term 'big data' refer to?
What does the term 'big data' refer to?
What does having an 'analytics mindset' refer to?
What does having an 'analytics mindset' refer to?
What is an analytics mindset?
What is an analytics mindset?
What are the characteristics of a good data analytic question?
What are the characteristics of a good data analytic question?
What does the ETL process stand for?
What does the ETL process stand for?
Why is the ETL process important in the analytics mindset?
Why is the ETL process important in the analytics mindset?
What are the three steps in the data extraction process?
What are the three steps in the data extraction process?
How can repetitive ETL processes be managed efficiently?
How can repetitive ETL processes be managed efficiently?
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