How to create a new schema/new user in Oracle Database 11g?

Generally speaking a schema in oracle is the same as a user. Oracle Database automatically creates a schema when you create a user. A file with the DDL file extension is an SQL Data Definition Language file. Creating new user (using SQL Plus) Basic SQL Plus commands: – connect: connects to a database – disconnect: … Read more

How can I tell jaxb / Maven to generate multiple schema packages?

I had to specify different generateDirectory (without this, the plugin was considering that files were up to date and wasn’t generating anything during the second execution). And I recommend to follow the target/generated-sources/<tool> convention for generated sources so that they will be imported in your favorite IDE automatically. I also recommend to declare several execution … Read more

YAML Schema Validation?

JSON Schema can be used with most YAML documents resulting in a more portable and better documented solution than Rx or Kwalify. JSON Schema is the only of the three for which I have been able to find editor support. More information on using YAML and JSON Schema including tools and editor support is tracked … Read more

MongoDB Schema Design – Many small documents or fewer large documents?

You’ll definitely need to optimize for the queries you’re doing. Here’s my best guess based on your description. You’ll probably want to know all Credit Cards for each Customer, so keep an array of those within the Customer Object. You’ll also probably want to have a Customer reference for each Payment. This will keep the … Read more

How to create an empty DataFrame with a specified schema?

Lets assume you want a data frame with the following schema: root |– k: string (nullable = true) |– v: integer (nullable = false) You simply define schema for a data frame and use empty RDD[Row]: import org.apache.spark.sql.types.{ StructType, StructField, StringType, IntegerType} import org.apache.spark.sql.Row val schema = StructType( StructField(“k”, StringType, true) :: StructField(“v”, IntegerType, false) … Read more

Get GraphQL whole schema query

Update Using graphql-cli is now the recommended workflow to get and update your schema. The following commands will get you started: # install via NPM npm install -g graphql-cli # Setup your .graphqlconfig file (configure endpoints + schema path) graphql init # Download the schema from the server graphql get-schema You can even listen for … Read more