sql server 2005 - how to update all clients after each db transcation -

-

I develop a client-server based application using WPF, SQL-Server and WCF I am here. It is basically a type of POS application (not using any POS library but features are almost identical). Server-side coding is almost complete Now I'm going into client-side coding. I'm new to WCF (the first app on WCF) and client-server architecture, so before my coding began I was surrounded by some suspicion. According to my client (person), he should be able to print the item sales bill (memos) along with the server from the client computer. Each memo should have a memo number for that transaction which should be automatically increased and the seller should be able to see which memo is not going to be used so for this purpose I The Application Sale window has added a memo no field, which will show the memo number (final memo number + 1) database.

There is a problem here, let's say if 3 sales counter and the seller opens their respective sales windows for billing, they will see them all (Final Memo Number + 1) and if 3 of those bills happen together The same memo will be stored for 3 different transactions.

Let me tell you that for my sales there are 2 tables in Table 1 stores discount, Grand Total, Salesman ID and Memo no and table 2 store memo numbers, item Code, Quantity, Bill Date etc. Its its memo no / strong> two tables and if it gets tampered with, then you know what it can do in the monthly report.

This situation flowing from my mind came here to get the solution and solution. Any suggestions, links, codes that I can do to overcome this can be very useful.

You can consider modifying your design so that a memorandum is assigned to A customer starts a sale.

One way to implement this is to use another table to store the order of the memo numbers: 

  Make Table Memo Sequence (MemoInt Int Identification (1, 1), Dataseted Debt Time)

Each time the customer's sales window is open, the current date / time should be inserted in the memo suvens. The memoid value was returned to the client as a memo using the back (a OUTPUT section or SCOPE_IDENTITY () ).

Thus, the memo number assigned to each customer from the beginning of a unique transaction.

NB - This can not be a suitable solution if it is a necessity that there is no gap between the sequence of memo numbers.


Comments

Post a Comment

Popular posts from this blog

c# - sqlDecimal to decimal clr stored procedure Unable to cast object of type 'System.Data.SqlTypes.SqlDecimal' to type 'System.IConvertible' -

-
I'm new to this I'm writing a clr. stored procedure that can be used to get values ​​used in a calculation Call for another stored procedure for Gives an archived methodology int (I think SqlInt32? Value of the table's value is int) which is then necessary to convert to decimal. Here I have the code: Public static integral mood (SQL MDMMYLUE, escalistering AMY type, out of SQLDCM Result) {aResult = 0; Try {SqlConnection conn = New SqlConnection ("Reference Connection = True"); SqlCommand cmd = New SqlCommand ("sp_GetType", conn); Cmd.Parameters.AddWithValue ("@ myValueType", aMyValueType); Cmd.CommandType = CommandType.StoredProcedure; Conn.Open (); Object type = CMD. Exclamation Asser (); Conn.Close (); Decimal type FORCalculation = Convert. ToDecimal (type); Decimal value = convert toDecimal (aMyValue); // ** calculation calc = new calculation (); Decimal result = calorie.docalulation (typefarculation, value); I get an exception...
Read more

Calling GetGUIThreadInfo from Outlook VBA -

-
I need to find the active window'm writing a VBA macro in MS Outlook, which is a specific process. The goal of this is to get the active window / document name even if its original application has more than one document interface. User processor with GetCurrentThreadId is active, I am using GetGUIThreadInfo to get .dll. Here is the correct code: private type RECT as as Left LongPtr top LongPtr right LongPtr down LongPtr termination of private type GUITHREADINFO cbSize as LongPtr flags LongPtr hwndActive LongPtr hwndFocus LongPtr hwndCapture LongPtr as as as as as reset as LongPtr rcCaret as LongPtr hwndCreate as LongPtr hwndMoveSize as HwndMenuOwner end of Private Equity PtrSafe function GetWindowThreadProcessId Lib "user32" (_BVV hnw LongPtr as LongPtr Nig Mr. announced as PtrSafe function GetGUIThreadInfo Lib "user32" _ (ByVal dwthreadid as LongPtr, _ lpguithreadinfo as GUITHREADINFO) LongPtr Sub MyFunction () as dim strWindowTitle string = space as s...
Read more

Obfuscating Python code? -

-
I'm looking for a way to hide my Python source code. print "Hello World!" How can I encode this example so that it is not human-readable? I have been asked to use Base 64 but I'm not sure how. itemprop = "text"> It is limited only, first level ambiguous resolution, but has built-in: byte-code in Python Is a compiler for: dragon-o-m py_compile & lt; Your program.py & gt; creates a .pyo file with a byte-code, and where the docstrings are removed, etc. You can rename .pyo with the .py extension, and python & lt; Your program.py & gt; runs as your program, but it does not have your source code. PS : If your program blur modules like this, you need to rename them with the .pyc suffix (I Not sure it will not break a day), or you can work with .pyo and run them with python -o ... .pyo ( Import should work). This will allow dragon to search your modules (otherwise, Python looks for the .py module).
Read more