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 ## QUESTIONS
 
 - What is a database (DB)?
+  It is an electronically stored collection of data
 - What is a column? A row? A table? What do these represent?
+  It is a category of a table in a database. A row represents an entry or data record. A table is a structured way to store rows and columns.
 - What is a primary key? Why is it important?
+  It is a unique identifier for a row and it is important because it ensures a unique entry in a table
 - What is the difference between a SQL DB, NoSQL DB, and Graph DB?
+  SQL databases require a fixed table schema, while NoSQL databases do not. Graph DBs prioritize the relationship between different data records
 - What is data persistence? Why is it important?
+  It is the ability of an application to save data so that it can be retrieved and used at a later date, even if the system has been restarted or closed.
 - What is a data model?
+  A strutured way of organizing data and defining how it is stored and accessed
 - What is an ORM?
+  An object-relational map is a tool that allows developers to interact with a relational database through objects in code.
 
 ## ADVANCED
 
 - What is 3rd Normal Form (3NF)?
+  3NF is a stage in database normalization used to design relational database tables to minimize data redundancy and ensure its integrity.
 - What are the three types of relationships in a relational database, and what’s the difference between them?
+  one to one, one to many, and many to many. In one to one. In a one to one relationship, one row in a table is linked to a row in another. In a one to many relationship, one row in a table is linked to many rows in another. Finally, a many to many relationship has multiple rows in one table connecting to many rows in another table.
 
 ## RESOURCES