# Synthetic Data Creation **URL:** https://forum.datacebo.com/c/synthetic-data-creation/20.md [Latest](https://forum.datacebo.com/latest.md) · [Categories](https://forum.datacebo.com/categories.md) · [Tags](https://forum.datacebo.com/tags.md) --- ## [About the Synthetic Data Creation category](https://forum.datacebo.com/t/about-the-synthetic-data-creation-category/397)
**Author:** [@neha](https://forum.datacebo.com/u/neha)\ **Replies:** 0\ **Last updated:** [January 26, 2026, 4:43pm UTC](https://forum.datacebo.com/t/about-the-synthetic-data-creation-category/397 "2026-01-26T16:43:37Z")
Are you using SDV to create synthetic data? Get help and file feedback here. For more information about using SDV, please see the API docs. All features for SDV Community, SDV Enterprise, bundles, and additional add-ons… --- ## [HMA synthesizer](https://forum.datacebo.com/t/hma-synthesizer/468)
**Author:** [@AlexB](https://forum.datacebo.com/u/AlexB)\ **Replies:** 1\ **Last updated:** [October 21, 2026, 2:27pm UTC](https://forum.datacebo.com/t/hma-synthesizer/468 "2026-10-21T14:27:08Z")
My team works with the SDV Community version, and recently upgraded SDV from version 1.25.0 → 1.38.5. We are now getting the error that our HMASynthesizer is unavailable with a depth of 2 when it previously was. Did this… --- ## [Scaling specific tables in a multi-table Synthetic Data Vault (SDV) model](https://forum.datacebo.com/t/scaling-specific-tables-in-a-multi-table-synthetic-data-vault-sdv-model/427)
**Author:** [@singhe](https://forum.datacebo.com/u/singhe)\ **Replies:** 7\ **Last updated:** [June 19, 2026, 5:53am UTC](https://forum.datacebo.com/t/scaling-specific-tables-in-a-multi-table-synthetic-data-vault-sdv-model/427 "2026-06-19T05:53:09Z")
Which software are you using? (SDV Community or SDV Enterprise?): SDV Community Software Details (What is your SDV version? Python version?): SDV 1.28.0, Python 3.11.6 Description I am working with a multi-table datase… --- ## [Broken Survey Rules](https://forum.datacebo.com/t/broken-survey-rules/445)
**Author:** [@kpatgaonkar](https://forum.datacebo.com/u/kpatgaonkar)\ **Replies:** 2\ **Last updated:** [June 18, 2026, 6:16am UTC](https://forum.datacebo.com/t/broken-survey-rules/445 "2026-06-18T06:16:21Z")
Which software are you using? (SDV Community or SDV Enterprise?): SDV Community Software Details (What is your SDV version? Python version?): 3.13 Description My survey data has some rules. For example, If ‘Female’ cod… --- ## [\[Resolved\] Num\_row\_per\_table=1000 DayZSynthesizer Multitable](https://forum.datacebo.com/t/resolved-num-row-per-table-1000-dayzsynthesizer-multitable/147)
**Author:** [@epicvu](https://forum.datacebo.com/u/epicvu)\ **Replies:** 7\ **Last updated:** [April 21, 2026, 7:08pm UTC](https://forum.datacebo.com/t/resolved-num-row-per-table-1000-dayzsynthesizer-multitable/147 "2026-04-21T19:08:26Z")
Hi! I have a little issue while trying to set my number of rows per table when using the MultiTable DayZSynthesizer. I get a little message whenever I try to force a number (the default settings works just fine) but not… --- ## [Synthesizing a subset of a table](https://forum.datacebo.com/t/synthesizing-a-subset-of-a-table/431)
**Author:** [@neha](https://forum.datacebo.com/u/neha)\ **Replies:** 3\ **Last updated:** [April 14, 2026, 2:33pm UTC](https://forum.datacebo.com/t/synthesizing-a-subset-of-a-table/431 "2026-04-14T14:33:07Z")
This question was originally filed here by @rizwan. I’m separating it out into a new thread so that we can discuss it specifically. Which software are you using? SDV Enterprise Software Details SDV 0.44, Python 3.13 D… --- ## [Including a code table for reference only](https://forum.datacebo.com/t/including-a-code-table-for-reference-only/430)
**Author:** [@neha](https://forum.datacebo.com/u/neha)\ **Replies:** 3\ **Last updated:** [April 14, 2026, 2:30pm UTC](https://forum.datacebo.com/t/including-a-code-table-for-reference-only/430 "2026-04-14T14:30:05Z")
This question was originally filed here by @rizwan. I’m separating it out into a new thread so that we can discuss it specifically. Which software are you using? SDV Enterprise Software Details SDV 0.44, Python 3.13 D… --- ## [Combining two columns into a single column](https://forum.datacebo.com/t/combining-two-columns-into-a-single-column/429)
**Author:** [@neha](https://forum.datacebo.com/u/neha)\ **Replies:** 2\ **Last updated:** [April 13, 2026, 5:38pm UTC](https://forum.datacebo.com/t/combining-two-columns-into-a-single-column/429 "2026-04-13T17:38:27Z")
This question was originally filed here by @rizwan. I’m separating it out into a new thread so that we can discuss it specifically. Which software are you using? SDV Enterprise Software Details SDV 0.44, Python 3.13 D… --- ## [Combining two columns, include code table for reference only and synthesize subset of table](https://forum.datacebo.com/t/combining-two-columns-include-code-table-for-reference-only-and-synthesize-subset-of-table/428)
**Author:** [@rizwan](https://forum.datacebo.com/u/rizwan)\ **Replies:** 2\ **Last updated:** [April 13, 2026, 3:50pm UTC](https://forum.datacebo.com/t/combining-two-columns-include-code-table-for-reference-only-and-synthesize-subset-of-table/428 "2026-04-13T15:50:24Z")
Which software are you using? SDV Enterprise Software Details SDV 0.44, Python 3.13 Description Hi SDV team, I have couple of questions. How to combine two columns and generate the value for the third column when dat… --- ## [OverflowError: Range exceeds valid bounds](https://forum.datacebo.com/t/overflowerror-range-exceeds-valid-bounds/416)
**Author:** [@Mariam](https://forum.datacebo.com/u/Mariam)\ **Replies:** 3\ **Last updated:** [March 20, 2026, 2:42pm UTC](https://forum.datacebo.com/t/overflowerror-range-exceeds-valid-bounds/416 "2026-03-20T14:42:14Z")
Which software are you using? (SDV Community or SDV Enterprise?):sdv community Software Details (What is your SDV version? Python version?):sdv - latest , python 3.12 Description Hi team, I have wrapped the SDV Pytho… --- ## [SDV foreign key detection in community version](https://forum.datacebo.com/t/sdv-foreign-key-detection-in-community-version/419)
**Author:** [@Mariam](https://forum.datacebo.com/u/Mariam)\ **Replies:** 1\ **Last updated:** [March 20, 2026, 2:29pm UTC](https://forum.datacebo.com/t/sdv-foreign-key-detection-in-community-version/419 "2026-03-20T14:29:37Z")
Hi SDV Team, I’m using the community version of SDV, and I’ve noticed that the foreign key detection relies on the column\_name\_match heuristic. In our database, every table uses ‘id’ as its primary key. As a result, SDV … --- ## [Customizing id column](https://forum.datacebo.com/t/customizing-id-column/417)
**Author:** [@Mariam](https://forum.datacebo.com/u/Mariam)\ **Replies:** 5\ **Last updated:** [March 20, 2026, 2:21pm UTC](https://forum.datacebo.com/t/customizing-id-column/417 "2026-03-20T14:21:37Z")
Hey team I’m working on our Synthetic Data Vault (SDV) implementation and need some guidance. Current situation: We’re generating synthetic data from our PostgreSQL database using SDV. The generated data looks good, b… --- ## [Connecting to MSSQL](https://forum.datacebo.com/t/connecting-to-mssql/406)
**Author:** [@rizwan](https://forum.datacebo.com/u/rizwan)\ **Replies:** 8\ **Last updated:** [February 12, 2026, 4:19pm UTC](https://forum.datacebo.com/t/connecting-to-mssql/406 "2026-02-12T16:19:59Z")
Which software are you using? SDV Enterprise Software Details (What is your SDV version? Python version?): 0.37, 8.10 Description I have followed the instructions on docs.sdv.dev for MSSQL connections. I can connect, l… --- ## [Tips for maintaining many-to-one relationships across multiple tables](https://forum.datacebo.com/t/tips-for-maintaining-many-to-one-relationships-across-multiple-tables/219)
**Author:** [@ecastaner](https://forum.datacebo.com/u/ecastaner)\ **Replies:** 1\ **Last updated:** [January 26, 2026, 9:13pm UTC](https://forum.datacebo.com/t/tips-for-maintaining-many-to-one-relationships-across-multiple-tables/219 "2026-01-26T21:13:33Z")
@giovanni.circo could you please add a short description of the challenges you’re facing? --- ## [\[Resolved\] New way to add constraints](https://forum.datacebo.com/t/resolved-new-way-to-add-constraints/301)
**Author:** [@epicvu](https://forum.datacebo.com/u/epicvu)\ **Replies:** 6\ **Last updated:** [January 26, 2026, 9:02pm UTC](https://forum.datacebo.com/t/resolved-new-way-to-add-constraints/301 "2026-01-26T21:02:24Z")
Hey I’d like to ask a little quick question about the new way to add constraints. I was used to add constraints using dictionnary and saw the note saying that I have to use sdv.cag (I do now) but some of the constraints… --- ## [Fix combinations between tables](https://forum.datacebo.com/t/fix-combinations-between-tables/399)
**Author:** [@neha](https://forum.datacebo.com/u/neha)\ **Replies:** 0\ **Last updated:** [January 26, 2026, 8:58pm UTC](https://forum.datacebo.com/t/fix-combinations-between-tables/399 "2026-01-26T20:58:34Z")
I’m filing this feature request based on this older thread about adding multi-table constraints. Although we’ve added multi-table constraints, we haven’t yet added logic for the particular pattern that is being described… --- ## [\[Resolved\] Cross-table constraints](https://forum.datacebo.com/t/resolved-cross-table-constraints/220)
**Author:** [@ecastaner](https://forum.datacebo.com/u/ecastaner)\ **Replies:** 3\ **Last updated:** [January 26, 2026, 8:53pm UTC](https://forum.datacebo.com/t/resolved-cross-table-constraints/220 "2026-01-26T20:53:19Z")
@giovanni.circo could you please add some details on the question you have regarding this topic? Thanks --- ## [\[Resolved\] Add a constraint for null values (that occur together)](https://forum.datacebo.com/t/resolved-add-a-constraint-for-null-values-that-occur-together/228)
**Author:** [@neha](https://forum.datacebo.com/u/neha)\ **Replies:** 5\ **Last updated:** [January 26, 2026, 8:42pm UTC](https://forum.datacebo.com/t/resolved-add-a-constraint-for-null-values-that-occur-together/228 "2026-01-26T20:42:39Z")
Let’s use this topic to discuss this Q from @yuntien.lee: Can you also advise how to set constraints e.g. if AdmitType is null then AdmitDate is null? --- ## [\[Resolved\] Specifying regex format for primary key and not having them in sequence](https://forum.datacebo.com/t/resolved-specifying-regex-format-for-primary-key-and-not-having-them-in-sequence/167)
**Author:** [@kalyan](https://forum.datacebo.com/u/kalyan)\ **Replies:** 2\ **Last updated:** [January 26, 2026, 8:38pm UTC](https://forum.datacebo.com/t/resolved-specifying-regex-format-for-primary-key-and-not-having-them-in-sequence/167 "2026-01-26T20:38:56Z")
If primary key has a specific regex format, user would like to specify it and also they would like to be not in sequence. For example if the primary key is of 5 digits, currently SDV would produce 1 2 3 4 .... 1000… --- ## [Improving metadata auto-detection of primary/foreign key connections](https://forum.datacebo.com/t/improving-metadata-auto-detection-of-primary-foreign-key-connections/298)
**Author:** [@neha](https://forum.datacebo.com/u/neha)\ **Replies:** 10\ **Last updated:** [May 9, 2025, 3:22pm UTC](https://forum.datacebo.com/t/improving-metadata-auto-detection-of-primary-foreign-key-connections/298 "2025-05-09T15:22:02Z")
I’m starting this topic to discuss the overall issue of improving the metadata auto-detection for primary and foreign key connections. It will be helpful to reply with examples of cases where metadata auto-detection did … --- ## [\[Resolved\] CSVHandler and large file reading](https://forum.datacebo.com/t/resolved-csvhandler-and-large-file-reading/296)
**Author:** [@epicvu](https://forum.datacebo.com/u/epicvu)\ **Replies:** 7\ **Last updated:** [April 23, 2025, 5:55pm UTC](https://forum.datacebo.com/t/resolved-csvhandler-and-large-file-reading/296 "2025-04-23T17:55:45Z")
Hi, I am currently testing the CSVHandler on a really large database of mine. I have a dump in csv files of each tables (50ish tables) but some of the tables are either empty or really full (around 10Gbs). I know that i… --- ## [Generate IDs using complex Regexes](https://forum.datacebo.com/t/generate-ids-using-complex-regexes/289)
**Author:** [@epicvu](https://forum.datacebo.com/u/epicvu)\ **Replies:** 5\ **Last updated:** [March 27, 2025, 4:14pm UTC](https://forum.datacebo.com/t/generate-ids-using-complex-regexes/289 "2025-03-27T16:14:34Z")
Hi! I’m currently working on trying to generate some data using the DayZsynthesizer and I’m trying to give a id column a specific regex. Until now I have not encountered any problems with my regex but now it seems to cr… --- ## [\[Resolved\] Multitable Metadata Import Issue](https://forum.datacebo.com/t/resolved-multitable-metadata-import-issue/261)
**Author:** [@bhavya.kundra](https://forum.datacebo.com/u/bhavya.kundra)\ **Replies:** 3\ **Last updated:** [November 12, 2024, 5:25pm UTC](https://forum.datacebo.com/t/resolved-multitable-metadata-import-issue/261 "2024-11-12T17:25:08Z")
So, I am working on a multi table SDV project. When I am importing Metadata from sdv multi table library, I am getting the following error as you can see the below screenshot:- I have tried with the previous versions… --- ## [Large Model Training and Synthesizing](https://forum.datacebo.com/t/large-model-training-and-synthesizing/235)
**Author:** [@giovanni.circo](https://forum.datacebo.com/u/giovanni.circo)\ **Replies:** 2\ **Last updated:** [August 23, 2024, 6:31pm UTC](https://forum.datacebo.com/t/large-model-training-and-synthesizing/235 "2024-08-23T18:31:21Z")
This is a more general question regarding the scalability of the multi-table synthesizers to very large training sets and synthesized sets which are too large to fit into memory. If I have a very large database which ca… --- ## [Does the tool have the capability to support generation of FHIR or other HL7 v2 or CCDA resources in the absence of training data?](https://forum.datacebo.com/t/does-the-tool-have-the-capability-to-support-generation-of-fhir-or-other-hl7-v2-or-ccda-resources-in-the-absence-of-training-data/221)
**Author:** [@ecastaner](https://forum.datacebo.com/u/ecastaner)\ **Replies:** 0\ **Last updated:** [July 2, 2024, 12:32am UTC](https://forum.datacebo.com/t/does-the-tool-have-the-capability-to-support-generation-of-fhir-or-other-hl7-v2-or-ccda-resources-in-the-absence-of-training-data/221 "2024-07-02T00:32:11Z")
@giovanni.circo please feel free to add any other information you think is relevant Thanks --- ## [SDV and SQL Dump file](https://forum.datacebo.com/t/sdv-and-sql-dump-file/216)
**Author:** [@epicvu](https://forum.datacebo.com/u/epicvu)\ **Replies:** 3\ **Last updated:** [June 27, 2024, 8:20pm UTC](https://forum.datacebo.com/t/sdv-and-sql-dump-file/216 "2024-06-27T20:20:44Z")
Hi, It’s been a while! I am currently working on a module that generates SDV metadata from .sql structure dump file. I was wondering if you guys were working on something similar or it wasn’t in the picture at the momen… --- ## [Generating complex relationships in multi-table data](https://forum.datacebo.com/t/generating-complex-relationships-in-multi-table-data/212)
**Author:** [@giovanni.circo](https://forum.datacebo.com/u/giovanni.circo)\ **Replies:** 1\ **Last updated:** [June 21, 2024, 4:55pm UTC](https://forum.datacebo.com/t/generating-complex-relationships-in-multi-table-data/212 "2024-06-21T16:55:45Z")
The multi-table synthesizer does a good job out-of-the-box creating simple flat tables that are linked. However, most of our use cases involve complex many-to-one relationships. For example: A claims header table has a s… --- ## [PAR Out-of-Memory](https://forum.datacebo.com/t/par-out-of-memory/185)
**Author:** [@pranav.rupireddy](https://forum.datacebo.com/u/pranav.rupireddy)\ **Replies:** 2\ **Last updated:** [June 20, 2024, 6:35pm UTC](https://forum.datacebo.com/t/par-out-of-memory/185 "2024-06-20T18:35:12Z")
Error: PAR throws out of memory error Environment Details: SDV Version: 1.11.0 Python Version: 3.11.7 Operating System: Windows 10 Enterprise Data Context: rows: 4242950 unique sequences: 115742 columns: 17 Code C… --- ## [Multi-table models should support sequential data](https://forum.datacebo.com/t/multi-table-models-should-support-sequential-data/204)
**Author:** [@neha](https://forum.datacebo.com/u/neha)\ **Replies:** 0\ **Last updated:** [June 6, 2024, 6:22pm UTC](https://forum.datacebo.com/t/multi-table-models-should-support-sequential-data/204 "2024-06-06T18:22:45Z")
Problem Description Currently all multi-table synthesizers assume that each table contains single-table (non-sequential) data. However, in some cases you may have one or more table that correspond to sequences. As an exa… --- ## [\[Resolved\] HSASynthesizer FutureWarning](https://forum.datacebo.com/t/resolved-hsasynthesizer-futurewarning/177)
**Author:** [@yuntien.lee](https://forum.datacebo.com/u/yuntien.lee)\ **Replies:** 8\ **Last updated:** [May 24, 2024, 7:17pm UTC](https://forum.datacebo.com/t/resolved-hsasynthesizer-futurewarning/177 "2024-05-24T19:17:30Z")
Hi Support, Using HMASynthesizer our data passed through but the error messages showed up using HSASynthesizer. Can you help? Thanks. C:\\Users\\YunTien.Lee\\Anaconda3\\envs\\python312\\Lib\\site-packages\\sdv\\multi\_table\\base… [Next page](https://forum.datacebo.com/c/synthetic-data-creation/20.md?page=1)