When working with different graphs in Neo4j, it is often important to count the number of relationships between different nodes. Below are examples of common relationship counting tasks. The data…
Deleting Nodes and Relationships Deleting all nodes and relationships in a Neo4j database is very simple. Here is an example that does just that: MATCH (n) DETACH DELETE n; The…
Neo4j is a popular graph database which provides an easy way to import text files using the Cypher query language and a LOAD CSV clause. LOAD CSV by default expects…
Neo4j is the world’s leading graph database. Fortunately, Neo Technology publishes official Neo4j Docker images which makes it very easy to get started. Once you have Docker running, simply use…
The ability to select random records from a table in MySQL can be helpful. Luckily this is easy to do with the RAND() function. RAND() returns a random floating point…
One of the great features of Spark is the variety of data sources it can read from and write to. If you already have a database to write to, connecting…
One of the great features of Spark is the variety of data sources it can read from. Loading data from a database into Spark using JDBC requires 3 major steps.…