Data Concepts and Planning in Coding

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Questions and Answers

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.

less

A database is a container to store organized ______.

data

A relational database is used to organize data into related ______.

tables Signup and view all the answers

Entities in a database can be a person, place, thing, or ______.

event Signup and view all the answers

Entity relationship (ER) diagrams serve as a blueprint for how entities and ______ interact in a database.

relationships Signup and view all the answers

SQL stands for Structured ______ Language.

Query Signup and view all the answers

SQL is a non-procedural language, meaning it cannot write complete ______.

applications Signup and view all the answers

The data returned is stored in a result table called the ______.

result-set Signup and view all the answers

Creating new tables allows for building models, creating dashboards, and ______ the data.

visualize Signup and view all the answers

To add data to a new table, the SQL statement ______ is used.

INSERT INTO Signup and view all the answers

Temporary tables will be deleted when the current ______ is terminated.

session Signup and view all the answers

The WHERE clause is used to ______ records in a query.

filter Signup and view all the answers

A ______ operator allows you to specify multiple values in a query.

IN Signup and view all the answers

The ______ operator is used to combine the result set of two or more SELECT statements.

UNION Signup and view all the answers

Self joins are used to compare rows within the same ______.

table Signup and view all the answers

The INNER JOIN keyword selects records that have matching values in both ______.

tables Signup and view all the answers

______, saturation, and luminance are important concepts in data visualization.

Hue Signup and view all the answers

The ______ wildcard represents any number of characters, including zero characters.

percent Signup and view all the answers

The ______ JOIN returns all records from the left table and the matched records from the right table.

LEFT Signup and view all the answers

In a self join, a table is joined with ______.

itself Signup and view all the answers

The ______ operator in SQL is used to combine the result-set of two or more SELECT statements.

UNION Signup and view all the answers

Which clause is used to sort a UNION result as a whole? The ______ clause.

ORDER BY Signup and view all the answers

To combine multiple retrievals, we write several SELECT statements and put the keyword ______ between them.

UNION Signup and view all the answers

For the marketing campaign data, the most appropriate chart to visualize the funnel is a ______ chart.

Funnel Signup and view all the answers

The SQL command ______ is used to extract data from a database.

SELECT Signup and view all the answers

Each project is given a risk assessment value between 1 and 10, where 1 is the least risky and 10 is the ______.

riskiest Signup and view all the answers

Objects with like characteristics such as color, shape, and size are seen as belonging to the same group due to the principle of ______.

similarity Signup and view all the answers

The portion of a data visualization that is devoid of markings is known as ______.

white space Signup and view all the answers

The small end-of-stroke features in characters are known as ______ in serif fonts.

serifs Signup and view all the answers

To process pre-attentive attributes, ______ memory is typically used.

iconic Signup and view all the answers

Preattentive attributes can be utilized to draw the audience’s attention, but overuse can lead to ______.

clutter Signup and view all the answers

A ______ chart would be most appropriate for visualizing the risk and return of Ajax's R&D portfolio.

bubble Signup and view all the answers

Which type of memory is primarily responsible for processing visual information before conscious attention is applied? It is called ______ memory.

short-term Signup and view all the answers

A data dashboard is an example of ______ analytics.

descriptive Signup and view all the answers

A model that forecasts sales for the next quarter represents ______ analytics.

predictive Signup and view all the answers

A bar chart is best suited for displaying ______ data.

categorical Signup and view all the answers

A model that allocates financial investments to achieve financial goals is an example of ______ analytics.

prescriptive Signup and view all the answers

House price and square footage data are considered ______ data.

quantitative Signup and view all the answers

The best display of Netflix subscriber growth from 2010-2019 would likely be a ______ chart.

stacked column Signup and view all the answers

To analyze the makeup of departments by academic background, a ______ chart is suited for the data.

column Signup and view all the answers

Time series data is characterized by observations collected at ______ points.

time Signup and view all the answers

Objects that are physically close to one another are seen as belonging to the same ______.

group Signup and view all the answers

Pie charts often create unnecessary ______ compared to bar or column charts.

clutter Signup and view all the answers

The Gestalt principle of ______ refers to objects that are linked in some way being perceived as a group.

connection Signup and view all the answers

Increasing the data-ink ratio on a chart involves removing unnecessary ______.

gridlines Signup and view all the answers

Bar and column charts utilize the Gestalt principle of ______ while pie charts often use connection.

proximity Signup and view all the answers

A ______ color scheme is better suited for audiences needing detailed insights.

sequential Signup and view all the answers

Using a legend for a pie chart can create unnecessary eye ______ that can often be reduced by using a bar or column chart.

travel Signup and view all the answers

Objects with like characteristics such as color, shape, size, etc. are seen as belonging to the same ______.

group Signup and view all the answers

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 FROM clause specifies the data source.
The WHERE clause filters data based on conditions.

Creating Tables

Databases can be modified using CREATE TABLE statements.
The CREATE TABLE statement is used for creating new tables in databases.
The INSERT INTO...VALUES statement 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 WHERE clause filters database records

Advanced Filtering Techniques

The IN, OR, AND, NOT operators 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 JOIN combines rows with matching values in tables.
CROSS JOIN combines every row of one table with every row of another table.
LEFT JOIN, RIGHT JOIN, and FULL OUTER JOIN provide diverse merging capabilities.

UNION, UNION ALL, INTERSECT

UNION combines results from select statements without duplicates.
UNION ALL combines results with duplicates.
INTERSECT returns 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.

Studying That Suits You

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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.

Data Concepts and Planning in Coding

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Podcast

Questions and Answers

Data is a recorded description or measurement of something, and there are three types of data: structured, semistructured, and ______.

Thinking before coding is important because it leads to accurate results, more efficiency, and ______ time reworking.

A database is a container to store organized ______.

A relational database is used to organize data into related ______.

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.

SQL stands for Structured ______ Language.

SQL is a non-procedural language, meaning it cannot write complete ______.

The data returned is stored in a result table called the ______.

Creating new tables allows for building models, creating dashboards, and ______ the data.

To add data to a new table, the SQL statement ______ is used.

Temporary tables will be deleted when the current ______ is terminated.

The WHERE clause is used to ______ records 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.

Self joins are used to compare rows within the same ______.

The INNER JOIN keyword selects records that have matching values in both ______.

______, saturation, and luminance are important concepts in data visualization.

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.

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.

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.

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.

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 ______.

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.

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 ______.

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.

A data dashboard is an example of ______ analytics.

A model that forecasts sales for the next quarter represents ______ analytics.

A bar chart is best suited for displaying ______ data.

A model that allocates financial investments to achieve financial goals is an example of ______ analytics.

House price and square footage data are considered ______ data.

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.

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 ______.

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.

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.

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.

Objects with like characteristics such as color, shape, size, etc. are seen as belonging to the same ______.

Study Notes

Data and Types of Data

Importance of Planning Before Coding

Databases and Data Modeling

Relational Databases

Entities, Attributes, and Relationships

Entity Relationship Diagrams

SQL Language

SQL Database Use

SQL Statements

Creating Tables

SQL Data Types

Temporary Tables

Data Filtering Using WHERE

Advanced Filtering Techniques

Wildcards in Filtering

Subqueries

SQL Joins

UNION, UNION ALL, INTERSECT

Data Visualization

Studying That Suits You

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