GraphAcademy Discussions

About the Graph Academy category

Discussions about Graph Academy courses. Live classes meet on Discord channel #graphacademy

Connecting to Movie DBMS

I am trying to open the Browser on the Movie DBMS and I need to connect to it first. I have tried 'No authentication' but it did not work and I did not see any username, password combination in the guide so I cannot connect to the DBMS and I keep get...

Is it possible to correct the name on a Certificate of Completion?

for Querying with Cypher in Neo4j 4.x I accidently put John Sandoval instead of Jonas Sandoval is it possible to correct this?

Aggregation

In the 'Working with Cypher'-> Check your understanding , first question around aggregate functions, why is size() not considered an aggregate function if count is?

502 Bad Gateway Error

Good morning! Getting a 502 bad gateway error this morning in codesandbox. I have restarted both the Neo4j Sandbox session and the codesandbox session and browser. Thanks! Greg

Not getting how to create a new type in GraphQL

In the course Building GraphQL APIs using The Neo4j GraphQL library, in The exercises for adding a type of author and subject I am not getting. I am executing the type command in the play ground window. As well, i added the line to the schema.graphql...

Blocked from completing Building Graph QL API course

I can't connect to my Neo4j Sandbox using CodeSandBox. I am taking the Graph Academy course Building GraphQL APIs using Neo4j GraphQL library. The paraemeters in .env are correct. I attached a screen shot of the sandox connection config and the code...

CALL db.resampleIndex did not find index

Hello, On page How Queries Work in Neo4j - Cypher Query Tuning in Neo4j 4.x there is the example CALL db.resampleIndex(':Person(name)') When I typed this command I got 'No such index ':Person(name)'' To make it work, I did the following: :schema CA...

What makes an anchor node and anchor node?

Hi, I picked up an image at random https://neo4j.com/graphacademy/training-cqt-40/_images/HierarchyOfAccessibility.png. If we assume that indexing is not involved why can't the middle node or the one marked Downstream node be anchor nodes if the Cyph...

Introduction Graph Algorithms - Memory Requirements Estimation - Question 1: Memory Requirements Estimation

Question 1: What algorithms can you estimate heap memory for? There are four options: Betweenness CentralityCloseness CentralityPageRankLabel Propagation If I'm correct, estimations can be made on both the loading and the algorithms. So I checked all...

[Minor] Typos

Hi, couldn't help noticing that in a number of places the USE of GBP and GPD is used (sometimes within the same diagram) to signify UK's currency. Example: Refactoring and Evolving a Model - Graph Data Modeling for Neo4j section Goal: Eliminate dupli...

Resolved! How does this work - Multiple MATCH/OPTIONAL MATCH statements with WHERE

Hello fellow Neo4jers/ians! Going through the lessons under Querying with Cypher and a question - Related note from the Cypher Manual page - In the case of multiple MATCH / OPTIONAL MATCH clauses, the predicate in WHERE is always a part of the patt...

Monitoring queries

Hi, I am no the page: Using Query Best Practices - Using Indexes and Query Best Practices in Neo4j 4.x The section Example: Monitoring queries introduces :queries and dbms.listQueries(). I using Netscape v 90.0.2 (64-bit). Hope this helps

Using IS NULL instead of NOT exists() doesn't work as expected

In the "Using WHERE to Filter Queries" chapter, the Testing with patterns - 2 example is MATCH (p:Person)-[:WROTE]->(m:Movie) WHERE NOT exists( (p)-[:DIRECTED]->(m) ) RETURN p.name, m.title This works perfectly well and returns 6 results. However, ea...

IFA example in training

I can't follow the example with the 3 nodes and 3 relationships. What is the result for n.id? Is the answer n = 1 for id = 6? If so then I think I get it. Was I suppose to learn cypher before I started the training? I thought that I would pick u...

Tutorial: Bug in Page Copy to Clipboard function

Hello, I just wanted to share that with certain examples the Copy to Clipboard action does not work as expected. On page: Controlling Results Returned - Querying with Cypher in Neo4j 4.x, the example under "Ordering results" when copied also copies H...

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Forum Posts

About the Graph Academy category

Connecting to Movie DBMS

Is it possible to correct the name on a Certificate of Completion?

Aggregation

502 Bad Gateway Error

Not getting how to create a new type in GraphQL

Blocked from completing Building Graph QL API course

CALL db.resampleIndex did not find index

What makes an anchor node and anchor node?

Introduction Graph Algorithms - Memory Requirements Estimation - Question 1: Memory Requirements Estimation

[Minor] Typos

Resolved! How does this work - Multiple MATCH/OPTIONAL MATCH statements with WHERE

Monitoring queries

Using IS NULL instead of NOT exists() doesn't work as expected

IFA example in training

Tutorial: Bug in Page Copy to Clipboard function

Sandbox loading forever in Neo4j academy

Neo4j Browser window is not opening

In the 'Cypher Indexes and Constraints' course, Is...

Node properties - Difference between "identity" an...

queries cross graphs

Can I Use a command to get all result from 2 relat...

Problem with "Intermediate Cypher Queries Course" ...

Activating virtual environment in: Building Neo4j ...

Graph Academy: Importing CSV Data : Data Importer

Problem with Intermediate Cypher Queries Course