# Language structures support
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The list of commands is not 100% complete, and we are constantly expanding the capabilities of our analysis.
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## Glossary
**Script:** used as a synonym for the source file.
### Relationships
A relationship is the simplest relationship between objects, it represents a connection between them, there are different kinds of relationships
* **Script relationship:** (Script)−action→(Object)
The script relationship represents an "action" that is being executed inside the script towards an object.
E.g.:
UPDATE DB.SCH.T1 SET value1 = newValue;
(file.sql)−UPDATE→(DB.SCH.T1)
* **Contains relationship:** (Script)−contains→(Object)
The contains relationship is defined by CREATE commands. This will generate elements known as Objects otherwise the Objects found are called **Missing Objects**.
E.g.:
CREATE TABLE DB.SCH.T1 (...
(file.sql)−CONTAINS→(DB.SCH.T1)
### Dependencies
A dependency is a strong link between two objects. Most of the time the dependent object needs that dependency relationship so it can work.
* **Reference:** (Object1)−REFERENCES→(Object2)
The reference relationship is defined by the use of an Object inside a command, each object that has a "parent" identified will have this relationship. The **Missing Object** type will be used when the usage of an object is found, but the creation statement for the object was not.
E.g.:
CREATE VIEW DB.SCH.V1 AS SELECT * FROM DB.SCH.T1;
(DB.SCH.V1)−REFERENCES→(DB.SCH.T1)
## DDL Commands
Most DDL commands generate dependencies (or simple relationships). The CREATE command is pretty unique given its nature of generating objects, so we will be adding a specific block for it.