You can create your Custom Table and store the value.

Code to create custom table https://our.umbraco.com/documentation/Extending/Database/

Further how to write CRUD operation using scopeprovider is detailed below.

Hope this helps.

using Umbraco.Core.Scoping;

namespace My.Website
    public class DatabaseExample
    {
        private IScopeProvider _scopeProvider;

        public DatabaseExample(IScopeProvider scopeProvider)
        {
            _scopeProvider = scopeProvider;
        }

        public void DoSomething()
        {
            using (var scope = _scopeProvider.CreateScope())
            {
                // Scope.Database has what you need/want
                scope.Database.Fetch<BlogComment>("Select * From tblBlogComment");

                // You must always complete a scope
                scope.Complete();
            }
        }

        public void DoInsert(BlogComment comment)
        {
            using (var scope = _scopeProvider.CreateScope())
            {
                // Scope.Database has what you need/want
                scope.Database.Insert(comment);

                // You must always complete a scope
                scope.Complete();
            }
        }

    }
}

Cheers,

Shaishav

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