Visual Paradigm ERD Questions
I'm new to both Visual Paradigm and ERD. I created an entity, but am a bit lost what some of the notation is. I'm not sure what the large 'N' is, or the number 10 associated with the ID integer (both were autogenerated when creating a column). Any help would be great, I can't seem to find this in the documentation.
The "N" indicate the column is nullable or not.
The column type (integer or number) is subject to the target database specified for your project (under Tools > DB > Database Configuration). For example, by specify project target DB as Oracle then the columns with integer(10) will automatically change to number(10).
You can mark a column as primary key by simply adding "+" sign in front of the column name while in-line editing the column in ERD.
You can find the general ERD modeling tips for Visual Paradigm at https://www.visual-paradigm.com/support/documents/vpuserguide/3563/3564/85375_drawingentit.html
- Constrain a Specman list so it doesn't have identical values in consecutive elements
- How to type cast a list of uint to a list of vr_ahb_data in Specman?
- Static fields/methods in e
- What is the difference between deep_copy and gen keeping in Specman?
- Specman UVM: What is the difference between write_reg { .field == 2;}; and write_reg_fields?
- Does Specman support optional parameters to a method?
- Specman e: When colon equal sign ":=" should be used?
- Specman e: Is there a way to know how many values there is in an enumerated type?
- Specman e error: No match for file when using "for each line in file"
- How to run e file one by one? Not in parallel test
- Specman/e constraint (for each in) iteration
- Specman e: How driver's items queue can be locked from a sequence?
- Specman e: How to print variable's address?
- Specman e: "keep type .. is a" fails to refine the type of a field
- Specman soft select on variable, decimal vs. hexadecimal values
- Specman e: How to print a pointer to a struct?
- Specman e: Is there a way to print unit instance name?
- Specman e: simultaneous events error
- Specman e coverage: ignored values appear in the coverage statistics
- Specman e: How a sequence should be started when gen_and_start_main constrained to FALSE?
- Specman/e list of lists (multidimensional array)
- Does Specman e have struct constructor?
- Specman e: How the predefined sequence.item should be used?
- Specman e: define-as-computed macro error
- Specman e UVM: Why to inherit from uvm_* units?
- Specman e: A sequence drives its BFM also its MAIN was not defined in a test
- e HVL (IEEE 1647): expect expression fails unexpectedly
- Specman e subtyping: How to refer to FALSE value of conditional field in when/extend subtyping?
- e HVL (IEEE 1647): How to set 'X' value?
- Difference between declaring an event that is sensitive to a simple_port value and event_port