"Source this"

[revloc02c]

What does "source this" mean?

As in:
"Source schema.sql (in the editor's /sql directory) into your database."


or another example:
"Source this:
CREATE TABLE rule_sets (
ruleset_id TINYINT UNSIGNED NOT NULL auto_increment,
name VARCHAR(255) NOT NULL,
PRIMARY KEY(ruleset_id)
);
INSERT INTO rule_sets VALUES(0, "default");
UPDATE rule_sets SET ruleset_id=0;
CREATE TABLE rule_values (
ruleset_id TINYINT UNSIGNED NOT NULL,
rule_name VARCHAR(64) NOT NULL,
rule_value VARCHAR(10) NOT NULL,
INDEX(ruleset_id),
PRIMARY KEY(ruleset_id,rule_name)
);"

Mind you, I don't want an explanation of the code block above--what it does and why, I just want to know what "Source this" means you are supposed to do with it.