visio professional 2019 reverse engineer database

JOIN sys.types ct ON c.user_type_id = ct.user_type_id) JOIN sys.columns c ON t.object_id = c.object_id JOIN sys.tables t ON s.schema_id = t.schema_id I posted a first proto-query on StackOverflow and Larnu came to help and gave me a query that could help me list not only the column name and the data type but also max length, precision, scale and number of duplicates: WITH ColumnCount AS(ĬOUNT(c.column_id) OVER (PARTITION BY c., ct., c.max_length, c.precision, c.scale) AS Duplicates hopefully who developed the database avoided implicit conversionsĭon’t get me wrong, I’m the first who says that this reverse engineering is based on assumptions but the same is for blind SQL Injection, right? So I will call it Database Blind Reverse Engineering.

If two column from different table have the same name and the same data type, they are probably a constraint.the same column name in different tables might be a symptom of a relation.So I start thinking, maybe we can start by assuming that: When you do hacking or reverse engineering you need to try to put yourself in the shoes of those who create the code. I had to start working on the code by myself. Of course you can create an ERD if you have PK and FK. I don’t know you but if there are constraints (PK, FK) already in place what sort of Reverse Engineering should we do then? To me Reverse Engineering means that we have no idea of how the software works… and we need to find out how the software works. I have contacted each one of those and even if their website state that the do Reverse Engineering the reality is that “ …they cannot if there are no constraints“. Visual Paradigm ERD Tools (…Design, reverse and generate database trigger.).Erwin Data Modeler (Forward- and reverse-engineering of database code and model exchange ensures efficiency,).DbDesigner (Reverse & Forward Engineer).ERBuilder (You can reverse engineer an existing database by connecting to it directly).SQL Power Architect (…Forward/reverse engineers PostgreSQL, Oracle, MS SQL Server & more…).Navicat (…perform reverse/forward engineering processes…).If you search on Google for “ sql server reverse engineer diagram” you will stumble upon:

So how can we create an Entity Relationship Diagram without constraints and that isn’t there in the first place? I lately faced a problem: we are working on a complex ETL project that aims to migrate a database from DB2 to SQL Server.ĭB2 stands for “ it was made in the ’80s” when PK, FK and constraints were in the code and because we are stealing a customer from a concurrent we have no cooperation from those who have the code in their hands.

Visio professional 2019 reverse engineer database