Podcast
Questions and Answers
Data is a recorded description or measurement of something, and there are three types of data: structured, semistructured, and ______.
Data is a recorded description or measurement of something, and there are three types of data: structured, semistructured, and ______.
unstructured
Thinking before coding is important because it leads to accurate results, more efficiency, and ______ time reworking.
Thinking before coding is important because it leads to accurate results, more efficiency, and ______ time reworking.
less
A database is a container to store organized ______.
A database is a container to store organized ______.
data
A relational database is used to organize data into related ______.
A relational database is used to organize data into related ______.
Entities in a database can be a person, place, thing, or ______.
Entities in a database can be a person, place, thing, or ______.
Entity relationship (ER) diagrams serve as a blueprint for how entities and ______ interact in a database.
Entity relationship (ER) diagrams serve as a blueprint for how entities and ______ interact in a database.
SQL stands for Structured ______ Language.
SQL stands for Structured ______ Language.
SQL is a non-procedural language, meaning it cannot write complete ______.
SQL is a non-procedural language, meaning it cannot write complete ______.
The data returned is stored in a result table called the ______.
The data returned is stored in a result table called the ______.
Creating new tables allows for building models, creating dashboards, and ______ the data.
Creating new tables allows for building models, creating dashboards, and ______ the data.
To add data to a new table, the SQL statement ______ is used.
To add data to a new table, the SQL statement ______ is used.
Temporary tables will be deleted when the current ______ is terminated.
Temporary tables will be deleted when the current ______ is terminated.
The WHERE clause is used to ______ records in a query.
The WHERE clause is used to ______ records in a query.
A ______ operator allows you to specify multiple values in a query.
A ______ operator allows you to specify multiple values in a query.
The ______ operator is used to combine the result set of two or more SELECT statements.
The ______ operator is used to combine the result set of two or more SELECT statements.
Self joins are used to compare rows within the same ______.
Self joins are used to compare rows within the same ______.
The INNER JOIN keyword selects records that have matching values in both ______.
The INNER JOIN keyword selects records that have matching values in both ______.
______, saturation, and luminance are important concepts in data visualization.
______, saturation, and luminance are important concepts in data visualization.
The ______ wildcard represents any number of characters, including zero characters.
The ______ wildcard represents any number of characters, including zero characters.
The ______ JOIN returns all records from the left table and the matched records from the right table.
The ______ JOIN returns all records from the left table and the matched records from the right table.
In a self join, a table is joined with ______.
In a self join, a table is joined with ______.
The ______ operator in SQL is used to combine the result-set of two or more SELECT statements.
The ______ operator in SQL is used to combine the result-set of two or more SELECT statements.
Which clause is used to sort a UNION result as a whole? The ______ clause.
Which clause is used to sort a UNION result as a whole? The ______ clause.
To combine multiple retrievals, we write several SELECT statements and put the keyword ______ between them.
To combine multiple retrievals, we write several SELECT statements and put the keyword ______ between them.
For the marketing campaign data, the most appropriate chart to visualize the funnel is a ______ chart.
For the marketing campaign data, the most appropriate chart to visualize the funnel is a ______ chart.
The SQL command ______ is used to extract data from a database.
The SQL command ______ is used to extract data from a database.
Each project is given a risk assessment value between 1 and 10, where 1 is the least risky and 10 is the ______.
Each project is given a risk assessment value between 1 and 10, where 1 is the least risky and 10 is the ______.
Objects with like characteristics such as color, shape, and size are seen as belonging to the same group due to the principle of ______.
Objects with like characteristics such as color, shape, and size are seen as belonging to the same group due to the principle of ______.
The portion of a data visualization that is devoid of markings is known as ______.
The portion of a data visualization that is devoid of markings is known as ______.
The small end-of-stroke features in characters are known as ______ in serif fonts.
The small end-of-stroke features in characters are known as ______ in serif fonts.
To process pre-attentive attributes, ______ memory is typically used.
To process pre-attentive attributes, ______ memory is typically used.
Preattentive attributes can be utilized to draw the audience’s attention, but overuse can lead to ______.
Preattentive attributes can be utilized to draw the audience’s attention, but overuse can lead to ______.
A ______ chart would be most appropriate for visualizing the risk and return of Ajax's R&D portfolio.
A ______ chart would be most appropriate for visualizing the risk and return of Ajax's R&D portfolio.
Which type of memory is primarily responsible for processing visual information before conscious attention is applied? It is called ______ memory.
Which type of memory is primarily responsible for processing visual information before conscious attention is applied? It is called ______ memory.
A data dashboard is an example of ______ analytics.
A data dashboard is an example of ______ analytics.
A model that forecasts sales for the next quarter represents ______ analytics.
A model that forecasts sales for the next quarter represents ______ analytics.
A bar chart is best suited for displaying ______ data.
A bar chart is best suited for displaying ______ data.
A model that allocates financial investments to achieve financial goals is an example of ______ analytics.
A model that allocates financial investments to achieve financial goals is an example of ______ analytics.
House price and square footage data are considered ______ data.
House price and square footage data are considered ______ data.
The best display of Netflix subscriber growth from 2010-2019 would likely be a ______ chart.
The best display of Netflix subscriber growth from 2010-2019 would likely be a ______ chart.
To analyze the makeup of departments by academic background, a ______ chart is suited for the data.
To analyze the makeup of departments by academic background, a ______ chart is suited for the data.
Time series data is characterized by observations collected at ______ points.
Time series data is characterized by observations collected at ______ points.
Objects that are physically close to one another are seen as belonging to the same ______.
Objects that are physically close to one another are seen as belonging to the same ______.
Pie charts often create unnecessary ______ compared to bar or column charts.
Pie charts often create unnecessary ______ compared to bar or column charts.
The Gestalt principle of ______ refers to objects that are linked in some way being perceived as a group.
The Gestalt principle of ______ refers to objects that are linked in some way being perceived as a group.
Increasing the data-ink ratio on a chart involves removing unnecessary ______.
Increasing the data-ink ratio on a chart involves removing unnecessary ______.
Bar and column charts utilize the Gestalt principle of ______ while pie charts often use connection.
Bar and column charts utilize the Gestalt principle of ______ while pie charts often use connection.
A ______ color scheme is better suited for audiences needing detailed insights.
A ______ color scheme is better suited for audiences needing detailed insights.
Using a legend for a pie chart can create unnecessary eye ______ that can often be reduced by using a bar or column chart.
Using a legend for a pie chart can create unnecessary eye ______ that can often be reduced by using a bar or column chart.
Objects with like characteristics such as color, shape, size, etc. are seen as belonging to the same ______.
Objects with like characteristics such as color, shape, size, etc. are seen as belonging to the same ______.
Flashcards
What is data?
What is data?
Recorded description or measurement of something, like a number or text.
What is structured data?
What is structured data?
Data organized in a table format with rows and columns, making it easy to analyze and understand.
What is semi-structured data?
What is semi-structured data?
Data with some organization, using categories or tags to group information. It's not as structured as a table, but still has some organization.
What is unstructured data?
What is unstructured data?
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What is a database?
What is a database?
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What is data modeling?
What is data modeling?
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What is a relational database?
What is a relational database?
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What is SQL?
What is SQL?
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WHERE clause
WHERE clause
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CREATE TABLE
CREATE TABLE
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INSERT INTO
INSERT INTO
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CREATE TEMPORARY TABLE
CREATE TEMPORARY TABLE
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Subquery
Subquery
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JOIN
JOIN
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CROSS JOIN
CROSS JOIN
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INNER JOIN
INNER JOIN
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Self JOIN
Self JOIN
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UNION
UNION
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Structured Data
Structured Data
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Semi-structured Data
Semi-structured Data
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Unstructured Data
Unstructured Data
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What SQL function is employed to view a sample of data?
What SQL function is employed to view a sample of data?
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Which symbol in SQL requests all columns?
Which symbol in SQL requests all columns?
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What does DROP TABLE student; do in SQL?
What does DROP TABLE student; do in SQL?
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In a self join, a table is joined with what?
In a self join, a table is joined with what?
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Which SQL keyword combines result sets without removing duplicates?
Which SQL keyword combines result sets without removing duplicates?
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Quantitative Data
Quantitative Data
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Cross-Sectional Data
Cross-Sectional Data
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Scatter Chart
Scatter Chart
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Descriptive Analytics
Descriptive Analytics
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Predictive Analytics
Predictive Analytics
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Prescriptive Analytics
Prescriptive Analytics
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Bar Chart
Bar Chart
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Clustered Column Chart
Clustered Column Chart
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Bubble Chart
Bubble Chart
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Line Chart
Line Chart
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Stacked Bar Chart
Stacked Bar Chart
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Similarity
Similarity
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Iconic Memory
Iconic Memory
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White Space
White Space
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Serif Font
Serif Font
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Proximity
Proximity
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Connection
Connection
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Enclosure
Enclosure
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Categorical color scheme
Categorical color scheme
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Sequential color scheme
Sequential color scheme
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Diverging color scheme
Diverging color scheme
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Study Notes
Data and Types of Data
- Data is a recorded description or measurement.
- Three types of data exist: structured, semi-structured, and unstructured.
- Structured data is in a tabular format.
- Semi-structured data uses categories and tags (identifiers).
- Unstructured data is primarily text-heavy.
Importance of Planning Before Coding
- Thorough planning leads to accurate results.
- Planning ensures efficient coding.
- Planning minimizes rework time.
Databases and Data Modeling
- Databases are containers for organized data.
- Data modeling structures and organizes data into related tables.
- Data models represent business processes and relationships.
Relational Databases
- Relational databases store data in tables.
- They allow access to related data.
Entities, Attributes, and Relationships
- Entities represent people, places, things, or events.
- Attributes are characteristics or properties of entities.
- Relationships define how entities interact.
Entity Relationship Diagrams
- ER diagrams document and illustrate relationships.
- They act as blueprints for database design.
- Components include entities, attributes, and relationships.
SQL Language
- SQL (Structured Query Language) is a computer language used to communicate with databases.
- It allows editing and extracting data.
- It's a non-procedural language, unlike other computer languages, not useful for complete applications
SQL Database Use
- SQL is used for querying, adding, updating, and managing database data.
SQL Statements
- SQL statements are used for selecting data.
- The result is stored in a result set.
- The
FROMclause specifies the data source. - The
WHEREclause filters data based on conditions.
Creating Tables
- Databases can be modified using
CREATE TABLEstatements. - The
CREATE TABLEstatement is used for creating new tables in databases. - The
INSERT INTO...VALUESstatement places data into the new table.
SQL Data Types
- SQL has numeric, character, and boolean data types. Examples of numeric types are integers, real numbers, decimals.
Temporary Tables
- Temporary tables are for faster complex queries, deleted after use.
- They're faster than creating permanent tables.
Data Filtering Using WHERE
- The
WHEREclause filters database records
Advanced Filtering Techniques
- The
IN,OR,AND,NOToperators refine filtering criteria.
Wildcards in Filtering
- Wildcards substitute one or more characters for filtering.
Subqueries
- Subqueries combine data from different tables.
SQL Joins
- Joins combine data from multiple tables.
INNER JOINcombines rows with matching values in tables.CROSS JOINcombines every row of one table with every row of another table.LEFT JOIN,RIGHT JOIN, andFULL OUTER JOINprovide diverse merging capabilities.
UNION, UNION ALL, INTERSECT
UNIONcombines results from select statements without duplicates.UNION ALLcombines results with duplicates.INTERSECTreturns common results between two select statements.
Data Visualization
- Pre-attentive attributes, such as color and form, are quickly processed.
- Gestalt principles of similarity, proximity, and closure help in visual grouping.
- Data visualization aids understanding.
- Data visualization should consider the audience's needs.
- Effective visualizations consider the audience's analytical comfort level.
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Description
This quiz covers essential concepts related to data types, the importance of planning before coding, database fundamentals, and the relationships among entities and attributes. Test your knowledge on structured, semi-structured, and unstructured data, as well as the principles of effective data modeling.
