Questions tagged [dac]

Questions utilizing the DAC tag are expected to relate to some aspect of Microsoft Data Tier Applications or DAC. Questions can include the DAC framework or DACfx, schema scripts from DACPAC, and combined data/schema scripts BACPAC. For questions about digital-analog converters, use [digital-analog-converter].

A DAC is a self-contained unit of deployment that enables data-tier developers and DBAs to package SQL Server objects, including database and instance objects, into a single entity called DAC package. Developers can build a DAC package using the Data-tier Application project system in Visual Studio, whereas SQL Server Management Studio (SSMS) users can extract a DAC and generate a DAC package file for an existing database.

A DAC package can be deployed to an instance of SQL Server to create a new DAC instance. The DAC deployment installs a new database on the instance, creates the database objects, and creates the logins associated with the users of the database. If a previous version of the DAC is already available, the DAC package can be used to upgrade the existing DAC instance to a newer version.

Questions utilizing the DAC tag are expected to relate to some aspect of Microsoft Data Tier Applications or DAC. Questions might also include related subjects such as the DAC framework or DACfx, as well as schema scripts known as DACPAC, and combined data/schema scripts BACPAC.

178 questions
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How to get Type of a column using DacFx api?

In SSDT project, using DacFx API, I am querying in memory model of a database. I have been trying to retrieve Type of a column, but cannot figure it out. Any idea how this could be done? private void TestMethod() { …
haku
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Installing Service from the appx bundle created from MSI using Desktop Application converter

I want to package a windows service as an appx bundle. I used below link to create MSI for installing service. https://support.microsoft.com/en-in/help/816169/how-to-create-a-setup-project-for-a-windows-service-application-in-visual-c MSI working…
Ankush Butole
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What can cause spikes in the DACs output? Can it be implementation related?

i have 8 external DACs MCP4728 which i'm communicating with using i2c. The data is coming directly from a USB cable (16-17ms) and i need to update/write those values as soon as i can. Right now i'm writing to the i2c inside the USB callback…
Luigi
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How do I enable DAC on a clustered SQL Server 2008 after I can no longer connect to SQL Server in any other way

I'm having issues with SQLServer 2008 where a Server level triggered was not dropped correctly. Articles on the web recommend dropping them through the DAC. However, the DAC is disabled by default on Clustered environments. How do I enable the DAC…
andy
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Check datatypes in where clause using DacFX SqlCodeAnalysisRule

I am trying to write a SqlCodeAnalysisRule rule to check comparison operators in a where clause to ensure that both sides are of the same data type for sargability. However, I am having an extremely hard time trying to figure out what the datatype…
SpaceGhost440
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informatica repository service unable to enable

I am having issues enabling the repository service on the Informatica Admin console. Steps I took so far, create a new repository service with option to create contents, keeps spinning and after a while it times out. I log back in and I see the…
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DAC Issue on version 5.30.1465

When I create a DAC for using that object on the code, worked on the version 4.20.2344 invoice.(somethig) But when I try to call the same object on version 5.3, it does not appear in visual Studio and I can't compile it, could you help me with…
Beny Hdez
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Redgate Comparison SDK Source Control Source Database

I'm working with the Redgate SQL Comparison SDK at the moment and have got it set up to nicely diff 2 databases. What I would like to do now is be able to diff an sqlproj from source control with a destination database. I have tried pulling the…
Uberzen1
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Unable to deploy .dacpac to SQL'16. Method Not found: set_Encryption

I have a dacpac file that is used from SQL 2005 to SQL 2016 databases. Our developers have been using SQL 2016 for the past few months, so we are now moving to production with it. When attempting to upgrade a database (no previous dacpackage) using…
kaspur
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Can't generate sine wave using DAC and DMA on STM32

I have problem generating sine wave with my STM32F303K8 nucleo board. In my opinion, everything is configured as it should be, but I can see gnd on the oscilliscope, so it is not working. Maybe anybody has an idea why? Heres the code: #include…
grzemski
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DAC implementation in spartan 3e kit using verilog

I have written two codes for implementation of DAC in Spartan 3E starter Kit, they seem to be working perfectly in simulation but when i attach them to chipscope and load on board I always get a zero value. I have also noticed that there were no…
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ANSI_PADDING in a DACPAC

When creating a DACPAC using SQLServer's sqlpackage.exe (from SQL Server 2014), so far I haven't seen ANSI_PADDING mentioned. And in some rare cases this is a problem as the database I'm working on seems to have a couple of fields where ANSI_PADDING…
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SQL Server : table is deleted by primary key is not from sys.objects

We have been publishing database through SSDT. Facing one very strange error. It has dropped the table but primary key of that table is not deleted which is not letting new table be created with the same table & primary key name. Our SQL Server…
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How best to represent negative-binary numbers for use in counters and comparators in Verilog HDL?

I have been designing a Delta-Sigma DAC and have run into confusion and despair over the handling of signed numbers in my (sigma)counters and (delta and Vref) comparators. I have tried to employ signed 2's complement but the EDAcompiler doesn't…
Andrew Davis
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KL25 DAC Driver shows no output on oscilloscope

I am writing a DAC driver for the Freedom KL25z and it does not work. I am testing it with an oscilloscope, but there is no rise in voltage. My configuration function is using the only DAC channel available for the KL25... Connected oscilloscope…
porras
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