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There is no question that India and other parts of the still-under-construction world must build green. The building sector is a major contributor to climate change and local environmental destruction because of construction materials used; energy expended for lighting, heating and cooling; and water consumption and waste discharge. This is the threat. There is an opportunity as well. Most of India is still unbuilt—over 70 per cent of the building stock is yet to be constructed—so unlike the rest of the already developed world, India can build anew in efficient and sustainable manner. But how?

This is an issue that has been troubling us at the Centre for Science and Environment. Over the past few years the idea of green buildings has gained popularity—everybody, it would seem, has turned a new leaf. Across the country large and small constructions are advertised as the greenest of green. To prove that they are indeed environment-friendly, the business of certification has also grown. There are agencies that now rate and award stars to individual buildings based on certain parameters. Many state governments are making these same standards of “greenness” mandatory. Some are even providing incentives, like exemptions on property tax, to those buildings that qualify as environment-friendly.

All this is important but do we know what green means?

When we began asking this question, what surprised us was the hostility with which it was received. Nobody wanted the new God to be questioned. Nobody wanted to be asked something as simple as what the post-commissioning performance of a green building was. We realised that the interests—of architects, builders, auditors and certifiers—in this new industry were already entrenched. It was a cozy club and nobody was keen to give us entry.

We dug in our heels. Buildings are the key to a cleaner and greener future. The building sector uses, already, some 40 per cent of the country’s electricity generation. So, every effort made to reduce energy intensity of buildings will go a long way. We wanted to know what was happening and what more could be done to reduce the material-use footprint and emissions of every construction.

What we discovered is not a convenient truth. My colleagues have put together a book, Building Sense: Beyond the Green Façade of Sustainable Habitat, to bust some myths and explore alternative approaches. What they find is as follows.

First, the general approach is to build wrongly and then “fit” in the green features. For instance, glass-enveloped buildings are certified green, simply because they install double or triple insulating glass or five-star air-conditioners to cool places that were first heated up deliberately.

Secondly, rating systems are being pushed through government and municipal schemes without any evidence that green-certified buildings are actually working. Data on the performance of the green buildings after they have been commissioned was, till very recently, not disclosed. So, even though rating agencies say that green-certified buildings save between 30 per cent and 50 per cent of the energy and reduce water consumption by per cent, they have no corroborating data.

Thirdly, all these so-called green technologies end up hiking costs to the extent that buildings become unaffordable to most. What India needs are building standards that are appropriate and cost-effective. Green architecture should not be a barrier to inclusive growth.

This is where old knowledge has a role to play. Traditional architecture is based on the principle of “localising” buildings so that they can optimise natural elements and be efficient in resource use. This “science and art” of engineers for nature needs to be infused with the new material knowledge of modern architecture.

Many architects, engineers and builders are innovating with this old-new science. That’s how the knowledge and practice of affordable and sustainable buildings will evolve. But big builders will adopt it only if and when the façade of green buildings is lifted. This is what we hope to do.

Friends,

In this post we are gonna discuss about Data Conversion transformation. Data Conversion is used to change the data type of a column. Let&#;s say you have Unicode String format in Source database and the same column is defined as Non Unicode in destination. In this case we need to convert the data before it reaches the destination and Data Conversion is the best bet for such scenarios. If you have a question that &#;Why the discrepancies(differences)  inthe SOURCE and DESTINATION structures &#;, the answer is &#;We are not moving data from single source&#;. We will have different types of sources like excel,notepad,teradata,sql &#; So, it is obvious that the data types used will not be the same in all the databases and also all the types will not be supported by all databases and hence this Data Conversion is required.

Lets discuss a simple Example. I created a table with the name Employe and inserted some records into the same. PFB the queries used.

create table employe
(
E_id int,
E_name varchar(),
)

Queries used to insert data.

Insert into employe values(,&#;achyut&#;)
Insert into employe values(,&#;ambriesh&#;)
Insert into employe values(,&#;anji&#;)
Insert into employe values(,&#;anji reddy&#;)
Insert into employe values(,&#;anuradha&#;)
Insert into employe values(,&#;anusha&#;)
Insert into employe values(,&#;anusha&#;)
Insert into employe values(,&#;arshiya&#;)
Insert into employe values(,&#;ashok&#;)

Note &#; You can use already existing table if you have one.

Follow the below steps to implement Data Conversion transformation.

• Open a new project and drag a Data Flow task from toolbox in Control Flow.
• Edit the Data Flow task by double clicking the object or by selecting EDIT button on Right click on the object. Make sure the Data Flow Page is opened as shown below.

• Select OLE DB data source from data flow sources and drag and drop it in the data flow.
• Double click on the OLE DB data source to open a new window where we can set the properties of the connection.
• Select the connection manager and click on new button to set the connection string as shown below.

• Set the connection to the database by providing the Server name,database name and authentication details if required.
• After the connection is set, select Data Access mode as &#;Table or View&#; as shown below and then select the table which we created just now.

• Click on columns page and select the columns we have to use as a source.
• The data source is set and now drag and drop Data Conversion transformation into Data Flow page and set the OLE DB Source Output as Input to Data Conversion transformation.
• Double Click Data Conversion to change the data type of any column you wish to and you can do that by changing DATA TYPE Column as shown below.

• You c an see the data type of column E_Name is changed from Non unicode to unicode below.

• Now the data type will be changed when ever the data passes through this transformation during the time of execution. Let&#;s configure the output to end this.
• Select a Flat File Destination and drop it in Data Flow page.
• Set the output of data conversion transformation as input to the flat file destination as shown below.

• Double click on Flat file destination and set the flat file connection properties as shown below.

• Once the connection is set then click on Mappings page and check the mappings are proper or not.
• Everything is SET and now we are ready to execute the package. Execute the package and make sure every control turns to GREEN which means successful.

• The above task moved data from a  table in SQL database to TEXT file and it also taken care of changing the data type of columns while moving.

Data Conversion is very useful one in the cases where you need to change the data type of columns. This is it !!

Happy Coding !!

Regards,

Roopesh Babu V