Using SDAC in Direct Mode for access to SQL Server from iOS and Android platforms doesn’t significantly differ from the one on Mac OS X or Windows platforms. Let’s see how this works in a sample below for RAD Studio XE7. Read the rest of this entry »
Summary: This article describes how to add time and date to a filename using the command line.
Sometimes it is crucial to append time and date to the name of a file. For example, we would like to have separate log files for each execution of data synchronization script. To prevent file overriding, we want to specify date and time in the name of each log file.
Devart was excited to participate at the 363d edition of SQLSaturday as a sponsor. The event took place on January 17, 2015 at the Lipscomb University, Nashville, USA. SQLSaturday’s are free 1-day training events for SQL Server professionals that focus on local speakers, providing a variety of high-quality technical sessions, and making it all happen through the efforts of volunteers. Read the rest of this entry »
dbForge Studio for SQL Server provides the Events Profiler tool that captures SQL Server events from a server. The events are stored in a trace file. The trace file can later be analyzed or used to replay a specific series of steps when trying to diagnose a problem. Events Profiler shows how SQL Server executes queries internally. This allows you to see exactly what T-SQL statements are submitted to the server and how the server accesses the database to return result sets.
You can use this tool for:
- Stepping through problem queries to find the root of the problem.
- Finding and diagnosing slow-running queries.
- Capturing the series of T-SQL statements that lead to a problem.
- Monitoring the performance of SQL Server to tune workloads.
- Correlating performance counters to diagnose problems.
Devart Company released SDAC and UniDAC for RAD Studio with a new functionality – Direct Mode for connection to SQL Server. The existing providers for SQL Server by Microsoft use the OLE DB interface, that allows using client applications only on Windows platforms. Due to absence of native solutions by Microsoft for Mac OS X, SDAC Direct Mode was the only opportunity to support SQL Server for Mac OS X.
Devart provides a ready solution for work with SQL Server from Mac OS X – Direct Mode. Let’s consider a simple sample of using Direct Mode. Read the rest of this entry »
Summary: This article describes how to estimate the coverage with code review of code written by individual developers.
The article builds upon Estimating Coverage of Project’s Source Code with Code Review. As from version 2.6, Review Assistant, Devart’s code review tool, provides the new Code Coverage report. Developed in response to numerous requests from our customers, the report serves for a better quality control over the code review process. Within the context of this article, we would like to show how to:
- Evaluate team performance in the code review process
- Evaluate individual developer’s performance Read the rest of this entry »
This article elaborates on the HTTP Tunneling connection method and explains how to configure it by means of dbForge Studio for MySQL.
Introducing HTTP Tunneling
HTTP tunneling is a method of connecting to a MySQL Server through HTTP/HTTPS protocol and via the port that is used by a web server. The method may come in useful when a direct connection to MySQL Server, that utilizes port 3306, is problematic for certain reasons, e.g. it is closed by security reasons, or firewall blocks access from all network protocols, except HTTP. Since port 80, that is used by web server, cannot be blocked, HTTP tunneling seems to be the ultimate technique to solve a range of MySQL connection issues.
Summary: This article describes the issue occurred with execution of the a polygon instance of the geography type and the possible solution for it.
Once I stumbled upon the following query:
DECLARE @g1 GEOGRAPHY;
SET @g1 = geography::Parse(‘POLYGON ((0 0, 1 0, -1 1, 2 2, 0 0))’);
The query seemed to be quite valid and SSMS executed it smoothly, but nevertheless dbForge Studio for SQL Server failed to execute it.
In SQL server Management Studio 2014, the query after execution returns the following binary serialized instance of the Geography data type:
During deserialization of the aforesaid value, dbForge Studio threw an exception, and I was destined to get to the bottom of the issue. Making no question of the value validity, I decided to write a test .NET application to localize the problem.
Summary: This article describes how to estimate the project’s source code coverage with code review. The article also gives an outline of how to make the most from Review Assistant’s Code Coverage report.
As from version 2.6, Review Assistant, Devart’s code review tool, provides the new Code Coverage report. Developed in response to numerous requests from our customers, the report serves for a better quality control over the code review process. Within the context of this article, we would like to show how to effectively use the tool. In particular, we will elaborate on how to:
- Exclude excessive data from a report with filtering
- Group report data
- Interpret report results
This article explains and demonstrates mapping a string representation of enum to string fields in a database in Entity Developer. The sample, demonstrated in this post, is included into our NHibernate Mapping Samples application, described in the corresponding NHibernate Mapping Samples blog article. It is named ‘Enum Type Property'; however, other samples from this application probably prove to become useful for NHibernate users both beginners and professionals, so we recommend downloading it for everyone who develop NHibernate applications.
The problem with mapping enum types in NHibernate is that NHibernate can map enum type values only to the numeric columns in database without additional manipulations. However, when enum values are stored in database as strings, NHibernate requires the user to perform some additional actions.
Read the rest of this entry »