- [Instructor] This is the graph data model…that we'll use when we import our road safety data.…Now let's use Load CSV to import this data…building up our graph model.…These nodes represent the data…from three separate CSV files,…so we'll need to write one Load CSV statement for each file.…Let's switch back to Neo4j browser.…Now we said that the Accident Index property…is a key that uniquely identifies the accident.…This means that we'll want to create a uniqueness constraint…on the accident label asserting…that the Accident Index property is unique.…
Now, let's create our accident nodes.…We'll use Periodic Commit to speed…the performance of our imports,…displaying our import across multiple transactions.…We'll use Load CSV With Headers…specifying the Accidents_2015.csv file.…We'll alias that value to row,…and since we have the uniqueness constraint on accident,…we can use the Merge command to avoid creating duplicates.…
So we'll merge on the accidentIndex property,…and in the case where we create a new accident,…
Author
Released
9/19/2017- Strengths and weaknesses of Neo4j
- Data modeling
- Creating a database
- Joining data sets
- Modeling data for joining data sets
- Searching a database
- CRUD operations
- Performing calculations
Skill Level Intermediate
Duration
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Introduction
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Welcome1m 17s
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The Database Clinic series1m 22s
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1. Neo4j in Five Minutes
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A brief overview of Neo4j3m 23s
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2. Create a Database
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Data modeling3m 52s
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Creating a database3m 56s
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Import data10m 27s
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Query data3m 12s
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3. Join Two Datasets
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Join datasets2m 50s
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Import data6m 26s
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4. Search a Database
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Database search1m 51s
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Query the database5m 22s
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Finalize the database query3m 34s
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5. Create, Read, Update, and Delete Operations
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CRUD operations2m 31s
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Create operations in Neo4j8m 36s
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Update operations in Neo4j8m 11s
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Delete operations in Neo4j3m 44s
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Read operations in Neo4j3m 43s
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6. Averages and Calculations
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Calculations1m 59s
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Update the data model3m 36s
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Refactor the data model10m 22s
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Import data for calculations5m 52s
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Perform calculations7m 55s
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Conclusion
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Next steps1m 44s
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Video: Import data