PL/SQL Syntax problems

I am working on online platform to make an ERD and to get the PL/SQL code of it but I get the following code (see below) but I am not sure if it is PL/SQL. I need to verify if this code is PL/SQL or not:

CREATE TABLE "CATEGORY" (
  "ID" NUMBER(10) PRIMARY KEY,
  "THLEVEL" NUMBER(10) NOT NULL
);

CREATE SEQUENCE "CATEGORY_SEQ" NOCACHE;

CREATE TRIGGER "CATEGORY_BI"
  BEFORE INSERT ON "CATEGORY"
  FOR EACH ROW
BEGIN
  IF :NEW."ID" IS NULL THEN
    SELECT "CATEGORY_SEQ".NEXTVAL INTO :NEW."ID" FROM DUAL;
  END IF;
END;;

CREATE TABLE "REPORT" (
  "ID" NUMBER(10) PRIMARY KEY,
  "CLIENT" CLOB NOT NULL,
  "VERSION" NUMBER(10) NOT NULL
);

CREATE SEQUENCE "REPORT_SEQ" NOCACHE;

CREATE TRIGGER "REPORT_BI"
  BEFORE INSERT ON "REPORT"
  FOR EACH ROW
BEGIN
  IF :NEW."ID" IS NULL THEN
    SELECT "REPORT_SEQ".NEXTVAL INTO :NEW."ID" FROM DUAL;
  END IF;
END;;

CREATE TABLE "ASSET" (
  "ID" NUMBER(10) PRIMARY KEY,
  "REPORT" NUMBER(10) NOT NULL,
  "IP" VARCHAR2(1000 CHAR) NOT NULL,
  "NAME" VARCHAR2(1000 CHAR)
);

CREATE INDEX "IDX_ASSET__REPORT" ON "ASSET" ("REPORT");

ALTER TABLE "ASSET" ADD CONSTRAINT "FK_ASSET__REPORT" FOREIGN KEY ("REPORT") REFERENCES "REPORT" ("ID");

CREATE SEQUENCE "ASSET_SEQ" NOCACHE;

CREATE TRIGGER "ASSET_BI"
  BEFORE INSERT ON "ASSET"
  FOR EACH ROW
BEGIN
  IF :NEW."ID" IS NULL THEN
    SELECT "ASSET_SEQ".NEXTVAL INTO :NEW."ID" FROM DUAL;
  END IF;
END;;

CREATE TABLE "SOLUTION" (
  "ID" NUMBER(10) PRIMARY KEY,
  "IMPLEVEL" VARCHAR2(1000 CHAR) NOT NULL,
  "DIFFICULTY" VARCHAR2(1000 CHAR) NOT NULL,
  "DESCRIPTION" CLOB NOT NULL
);

CREATE SEQUENCE "SOLUTION_SEQ" NOCACHE;

CREATE TRIGGER "SOLUTION_BI"
  BEFORE INSERT ON "SOLUTION"
  FOR EACH ROW
BEGIN
  IF :NEW."ID" IS NULL THEN
    SELECT "SOLUTION_SEQ".NEXTVAL INTO :NEW."ID" FROM DUAL;
  END IF;
END;;

CREATE TABLE "VULNERABILITY" (
  "ID" VARCHAR2(1000 CHAR) PRIMARY KEY,
  "ASSET" NUMBER(10) NOT NULL,
  "SOLUTION" NUMBER(10) NOT NULL,
  "CATEGORY" NUMBER(10) NOT NULL,
  "CVE" VARCHAR2(1000 CHAR),
  "DATE" TIMESTAMP NOT NULL,
  "LOCATION" CLOB NOT NULL
);

CREATE INDEX "IDX_VULNERABILITY__ASSET" ON "VULNERABILITY" ("ASSET");

CREATE INDEX "IDX_VULNERABILITY__CATEGORY" ON "VULNERABILITY" ("CATEGORY");

CREATE INDEX "IDX_VULNERABILITY__SOLUTION" ON "VULNERABILITY" ("SOLUTION");

ALTER TABLE "VULNERABILITY" ADD CONSTRAINT "FK_VULNERABILITY__ASSET" FOREIGN KEY ("ASSET") REFERENCES "ASSET" ("ID");

ALTER TABLE "VULNERABILITY" ADD CONSTRAINT "FK_VULNERABILITY__CATEGORY" FOREIGN KEY ("CATEGORY") REFERENCES "CATEGORY" ("ID");

ALTER TABLE "VULNERABILITY" ADD CONSTRAINT "FK_VULNERABILITY__SOLUTION" FOREIGN KEY ("SOLUTION") REFERENCES "SOLUTION" ("ID");

CREATE TABLE "EXPLOIT" (
  "ID" NUMBER(10) PRIMARY KEY,
  "VULNERABILITY" VARCHAR2(1000 CHAR) NOT NULL,
  "NAME" VARCHAR2(1000 CHAR) NOT NULL,
  "TYPE" CLOB NOT NULL,
  "DESCRIPTION" CLOB NOT NULL
);

CREATE INDEX "IDX_EXPLOIT__VULNERABILITY" ON "EXPLOIT" ("VULNERABILITY");

ALTER TABLE "EXPLOIT" ADD CONSTRAINT "FK_EXPLOIT__VULNERABILITY" FOREIGN KEY ("VULNERABILITY") REFERENCES "VULNERABILITY" ("ID");

CREATE SEQUENCE "EXPLOIT_SEQ" NOCACHE;

CREATE TRIGGER "EXPLOIT_BI"
  BEFORE INSERT ON "EXPLOIT"
  FOR EACH ROW
BEGIN
  IF :NEW."ID" IS NULL THEN
    SELECT "EXPLOIT_SEQ".NEXTVAL INTO :NEW."ID" FROM DUAL;
  END IF;
END;

So is this PL/SQL or is somethin else from Oracle? How this will sound in PL/SQL?