Cleanup Cypher README

Author: szarnyasg

cypher/README.md

@@ -1,16 +1,17 @@
 # LDBC SNB Cypher implementation
 
-[(open)Cypher](http://www.opencypher.org/) implementation of the [LDBC SNB BI benchmark](https://github.com/ldbc/ldbc_snb_docs).
+[Cypher](http://www.opencypher.org/) implementation of the [LDBC SNB benchmark](https://github.com/ldbc/ldbc_snb_docs).
+Note that some BI queries are not expressed using pure Cypher, instead, they make use of the [APOC](https://neo4j.com/labs/) and [Graph Data Science](https://neo4j.com/product/graph-data-science-library/) Neo4j libraries.
 
-## Starting Neo4j
+## Loading the Data in Neo4j
 
 The Neo4j instance is run in Docker. To initialize the environment variables, use:
 
 ```bash
 . scripts/environment-variables-default.sh
 ```
 
-To load the data, you might want to adjust the following variables:
+To load a data set other than the example data set, you might want to adjust the following variables:
 
 ```bash
 export NEO4J_CSV_DIR=/path/to/the/directory/social_network/
@@ -21,55 +22,4 @@ export NEO4J_CSV_POSTFIX=_0_0.csv
 scripts/load-in-one-step.sh
 ```
 
-## Loading the data set
-
-### Generating the data set
-
-The data set needs to be generated and preprocessed before loading it to the database. To generate it, use the `CsvComposite` serializer classes of the [DATAGEN](https://github.com/ldbc/ldbc_snb_datagen/) project:
-
-```
-generator.scaleFactor:0.003
-generator.mode:interactive
-serializer.format:CsvComposite
-```
-
-An example configuration for scale factor 1 is given in the [`params-csv-composite.ini`](https://github.com/ldbc/ldbc_snb_datagen/blob/dev/params-csv-composite.ini) file of the Datagen repository.
-
-### Preprocessing and loading
-#### Preprocessing
-
-Set the Neo4j following environment variables appropriately. Once you got the configuration right, you might want to save these variables for later:
-
-```bash
-env | grep ^NEO4J_
-```
-
-The CSV files require a bit of preprocessing:
-
-* replace headers with Neo4j-compatible ones
-* replace labels (e.g. change `city` to `City`)
-* convert date and datetime formats
-
-The following script takes care of those steps:
-
-```bash
-scripts/convert-csvs.sh
-```
-
-#### Delete your database and load the SNB CSVs
-
-Be careful -- this deletes all data in your database, imports the SNB data set and restarts the database.
-
-```bash
-scripts/delete-neo4j-database.sh
-scripts/import-to-neo4j.sh
-scripts/restart-neo4j.sh
-```
-
-#### All-in-one loading script
-
-If you know what you're doing, you can run all scripts with a single command:
-
-```bash
-scripts/load-in-one-step.sh
-```
+This script replaces the headers in the input CSVs, load them, starts Neo4j, and creates indices.