Full Answer
What is ETL in DBMS?
ETL stands for extract, transform, and load. ETL is a three-step data integration process used to synthesize raw data from a data source to a data warehouse, data lake, or relational database. Data migrations and cloud data integrations are common use cases for ETL.
What is the difference between ETL and data mapping?
Structured query language is the most common method of accessing and transforming data within a database. After extracting data, ETL uses business rules to transform the data into new formats. The transformed data is then loaded into the target. Data mapping is part of the transformation process.
What does the ETL Mark on products mean?
The ETL Listed Mark indicates to distributors, retailers and customers that your product has been tested by Intertek and found in compliance with accepted national standards. What products bear the ETL Mark? Intertek provides product safety testing and certification services for companies spanning multiple industries, markets, and applications.
How does ETL work with Hadoop?
ETL has evolved to support integration across much more than traditional data warehouses. Advanced ETL tools can load and convert structured and unstructured data into Hadoop. These tools read and write multiple files in parallel from and to Hadoop, simplifying how data is merged into a common transformation process.
What does ETL damp rated mean?
Damp-rated lights are used in places that have some contact with moisture, but not in areas with constant or direct exposure to water. These lights do not have the same full seals as lights made for wet environments, but they're used in many situations around the home.
What does ETL stand for in lighting?
Electrical Testing LabsIt's doled out by Electrical Testing Labs, which is operated by Intertek. ETL tests products to the same safety standards as UL. Like with UL, an ETL mark signifies a product's safety for the public.
What does damp location listed mean?
UL Listed for Damp Locations This rating also encompasses areas that are partially protected from water. However, it does not cover direct water contact. Damp location listed LED lights are frequently used indoors for laundry rooms, over showers and bathtubs, utility rooms, unfinished basements, and similar areas.
What is considered a damp location for lighting?
Damp Location: An exterior or interior location that is normally or periodically subject to condensation of moisture in, on, or adjacent to, electrical equipment, and includes partially protected locations.
What does ETL stand for?
extract, transform and loadETL, which stands for extract, transform and load, is a data integration process that combines data from multiple data sources into a single, consistent data store that is loaded into a data warehouse or other target system.
What's the difference between UL and ETL?
The main difference between UL and ETL listed products is that ETL doesn't create its own standards for certification. UL develops standards that are used by other organizations, including ETL. Both are Nationally Recognized Testing Laboratories (NRTLs). They serve as non-governmental labs that operate independently.
Is a shower considered a damp or wet location?
Outdoor areas that are exposed to the elements are considered wet locations. Indoor locations like showers are also considered wet locations. If an area can have water splash or flow with direct contact to a light fixture, then it is considered a wet location.
Is a bathroom considered a damp location?
Bathrooms are considered damp rated. Due to the water (hot or cold) that's generated from the sink and shower, there's a chance for humidity to rest upon the bulb. Damp-rated areas include indoor pools, bathrooms, and light fixtures near the kitchen sink/stove.
Do kitchen lights need to be damp rated?
An extra requirement: Fixtures must be rated for damp or wet locations. (A majority of lighting fixtures on the market are dry-rated only.) Sconces take precedence over pendants and chandeliers in space-efficient bathrooms. They scale better to small spaces, and they're particularly adaptable around mirrors.
How do I know if my light is damp rated?
There are a few ways to tell if a light is wet rated:Look for an IP rating (usually on the product)Check for UL or ETL certification logos.If it's damp rated, it can be used outdoors but not in direct exposure to water.If it's wet rated, it can be used in any location including direct exposure to water.More items...
What makes a light damp rated?
What are Damp Rated Lights? Damp rating refers to moist locations with no direct exposure to water. When a light is marked as suitable for a damp environment, it can be installed in areas like bathrooms (not in the shower or tub), basements, and some saunas.
Is a basement considered a damp location?
No, all dwelling unit basements are not damp locations. In fact, some are bone dry and never see any degree of moisture.
What is ETL Testing?
ETL — Extract/Transform/Load — is a process that extracts data from source systems, transforms the information into a consistent data type, then loads the data into a single depository. ETL testing refers to the process of validating, verifying, and qualifying data while preventing duplicate records and data loss.
What is ETL fee?
The fees for ETL certification vary depending on location, testing, labeling, inspections, and other factors. The one-time setup fee remains at US$520, while testing fees are provided in a case-by-case scenario, according to the product.
What are the steps of ETL process?
The 5 steps of the ETL process are: extract, clean, transform, load, and analyze. Of the 5, extract, transform, and load are the most important process steps.
How many ETL tools are there?
Types of ETL Tools. ETL tools can be grouped into four categories based on their infrastructure and supporting organization or vendor. These categories — enterprise-grade, open-source, cloud-based, and custom ETL tools — are defined below.
What is a NRTL?
All three companies (UL, ETL, CSA) are Nationally Recognized Testing Laboratories (NRTL) and any dry/damp/wet rating provided by these NRTLs is a good guideline when selecting a lighting fixture.
What is a suitable for wet location?
Fixtures and lamps that are “Suitable for Wet Locations” can be installed anywhere that liquids might come in direct contact with the electronics. It could be a slow drip, a strong flow or anything in-between. They are typically used outdoors for things such as site lighting, wall packs, open-air decks, walkway lights, gazebos, signs, and holiday lights. Indoor uses range from enclosed showers and pool areas to refrigerators or freezers as a safeguard in case of power failure.
What is UL & What Does UL Listed Mean?
UL marking guides and standards are used in a number of industries for rating product performance and safety. Known in full as Underwriters Laboratories, this independent organization has more than 60 laboratories around the world which do testing and certification for more than 100 countries. In addition to electrical safety, they also do testing for water quality, fire safety, food safety and other fields.
What is a luminaire suitable for?
Luminaires that are “Suitable for Damp Locations” are approved for areas that are regularly exposed to moisture and condensation. These fixtures can safely handle limited amounts of moisture on, in, and around their electrical components. This rating also encompasses areas that are partially protected from water.
What is a dry location only rating?
A dry rating is the right one for a luminaire in a location that rarely, if ever, is at risk of dampness or moisture. This means they are typically used indoors in above-ground rooms. This can include kitchens, dining rooms, hallways, offices, conference rooms, and reception areas.
What is UL marking on LED lights?
Using LED lights that have a UL marking (or ETL/CSA marking) that properly applies to the application of the light increases the safety and expected longevity of your system. Many other markings are possible based on installation methods and permitted or restricted locations. But knowing what UL dry vs. damp vs. wet ratings mean will go a long way towards a smart choice.
Can UL light fixtures be used in a dry location?
It is worth noting that UL does allow for the use of dry location rated fixtures in areas where temporary dampness may occur, such as building construction or lights installed above bathroom mirrors.
When was ETL invented?
ETL has a long history that began in 1896 when Thomas Alva Edison founded Electrical Testing Labs (ETL). Edison’s vision was to provide assurance to consumers through product performance and safety testing. When manufacturers apply Intertek’s ETL Listed Mark to their products, the letters “ETL” carry with them a long history of innovation, influence, and independence.
What is a NRTL?
A Nationally Recognized Testing Laboratory (NRTL) is an independent laboratory recognized by the Occupational Safety and Health Administration (OSHA) to test products to the specifications of applicable product safety standards.
Does ETL mark mean product compliance?
Yes. Inspectors, code officials and Authorities Having Jurisdiction recognize and accept the ETL Mark as proof of product compliance throughout North America as well as other parts of the world.
Is ETL a certification?
The ETL Mark is accepted throughout the U.S. and Canada. However, we are an international certification organization authorized to issue these product safety marks and more: NOM Mark, CE Marking, GS Mark, S Mark
What is ETL in data?
What is ETL? ETL stands for extract, transform and load. ETL is a type of data integration process referring to three distinct, but interrelated steps used to synthesize raw data from its source to a data warehouse, data lake or relational database. ETL loads data first into the staging server and then into the target system, whereas extract, ...
What is cloud ETL?
With cloud ETL, you can extract data from multiple sources, consolidate and transform that data, then load it into a centralized location where it can be accessed on demand. ETL is often used to make data readily available for analysts, engineers, and decision makers across a variety of use cases within an organization. ( What are the differences between ETL and ELT?)
What are the different types of ETL data pipelines?
Data pipelines are categorized based on their use case. The most common forms of data pipelines employ either batch processing or real-time processing.
Why is ETL important for teams?
Teams will move more quickly as ETL reduces the effort needed to gather, prepare, and consolidate data. ETL automation improves productivity because it allows data professionals to get the data they need, where they need it; without requiring technical skills to write code or scripts – saving valuable time and resources.
Why use ETL in healthcare?
Healthcare organizations use ETL in their holistic approach to data management. By synthesizing disparate data across their organization, health care businesses are accelerating clinical & business processes while improving member, patient, and provider experiences.
Why do organizations perform ETL?
Many organizations regularly perform ETL to keep their data warehouse updated with the latest data.
What is the first phase of ETL?
Extraction is the first phase of ETL. Data is collected from one or more data sources and held in temporary storage where the next two steps of ETL will be executed.
What is ETL in Hadoop?
ETL has evolved to support integration across much more than traditional data warehouses. Advanced ETL tools can load and convert structured and unstructured data into Hadoop. These tools read and write multiple files in parallel from and to Hadoop, simplifying how data is merged into a common transformation process. Some solutions incorporate libraries of prebuilt ETL transformations for both the transaction and interaction data that run on Hadoop. ETL also supports integration across transactional systems, operational data stores, BI platforms, master data management (MDM) hubs and the cloud.
What is ETL in data warehouse?
ETL is used to move and transform data from many different sources and load it into various targets, like Hadoop. When used with an enterprise data warehouse (data at rest), ETL provides deep historical context for the business.
Why is ETL important?
Why ETL Is Important 1 When used with an enterprise data warehouse (data at rest), ETL provides deep historical context for the business. 2 By providing a consolidated view, ETL makes it easier for business users to analyze and report on data relevant to their initiatives. 3 ETL can improve data professionals’ productivity because it codifies and reuses processes that move data without requiring technical skills to write code or scripts. 4 ETL has evolved over time to support emerging integration requirements for things like streaming data. 5 Organizations need both ETL and ELT to bring data together, maintain accuracy and provide the auditing typically required for data warehousing, reporting and analytics .
What is ETL in business?
ETL is a proven method that many organizations rely on every day – such as retailers who need to see sales data regularly, or health care providers looking for an accurate depiction of claims. ETL can combine and surface transaction data from a warehouse or other data store so that it’s ready for business people to view in a format they can understand. ETL is also used to migrate data from legacy systems to modern systems with different data formats. It’s often used to consolidate data from business mergers, and to collect and join data from external suppliers or partners.
Why do businesses use ETL?
Businesses have relied on the ETL process for many years to get a consolidated view of the data that drives better business decisions. Today, this method of integrating data from multiple systems and sources is still a core component of an organization’s data integration toolbox.
When did ETL become popular?
ETL gained popularity in the 1970s when organizations began using multiple data repositories, or databases, to store different types of business information. The need to integrate data that was spread across these databases grew quickly. ETL became the standard method for taking data from disparate sources and transforming it before loading it to a target source, or destination.
How to close a modal window?
This is a modal window. This modal can be closed by pressing the Escape key or activating the close button.
What is damp a location rating?
Light fixtures that are “suitable for damp locations” are good for outdoor or indoor areas that experience a lot of moisture. For example, an indoor pool or spa would need lights that were UL listed for damp locations. If you are purchasing light bulbs for a damp location, make sure the lights note that they are either “suitable for damp locations” or “suitable for wet locations.”
Can you use light bulbs in damp locations?
If you are purchasing light bulbs for a damp location, make sure the lights note that they are either “suitable for damp locations” or “suitable for wet locations.”.
Do UL listed lights need to be wet?
Lighting fixtures that are UL listed for wet locations should indicate that on the packaging. These kinds of lamps are great for outdoor areas like uncovered porches, gazebos, outdoor walkways, showers, outdoor dining areas, etc. Anywhere where light fixtures could be exposed to water, rain, or heavy storms, will need wet location rated lamps.
What does ETL stand for?
ETL stands for Electrical Testing Laboratories. This is the testing and certification division of Intertek Testing Laboratories, which is based in the UK. ETL tests parts and components of a wide range of products to make sure that they are in line with established standards. Unlike UL, ETL does not create their own standards for certification, ...
Why is ETL so popular?
ETL is very popular because they tend to be less expensive and can complete the certification process more quickly than UL does. Some critics of ETL say that while they use the UL certification standards, they are not as stringent as UL is.
What is UL listed?
UL, which stands for Underwriters Laboratory, is a leading organization that both creates standards, and performs tests on products to ensure they meet those standards. They have developed more than 1500 different safety standards that are approved for use in both the US and Canada.
What is the difference between UL and ETL?
The main difference between UL and ETL listed products is that ETL doesn’t create its own standards for certification. UL develops standards that are used by other organizations, including ETL. Both are Nationally Recognized Testing Laboratories (NRTLs). They serve as non-governmental labs that operate independently.
What do UL and ETL need to see?
Expect a visit to your manufacturing facility. UL and ETL will need to see how your product is made.
Why do we need UL and ETL?
The primary reason UL and ETL ratings exist is to help ensure that products and components are safe. It is recognized that when purchasing these products there will be less issues that can cost companies money. These certifications are not legally required in any industry, but many are financially encouraged to get it.
Does ETL have its own certification?
Unlike UL, ETL does not create their own standards for certification, but only makes sure that products meet the standards created by UL. Any product or component manufacturer that wants to be certified can choose which certification lab they work with.
What is a damp rated outdoor fan?
Damp-rated fans are ideal for covered outdoor spaces like patios and porches. Their ability to withstand exposure to moisture and humidity also makes them ideal for indoor spaces like bathrooms and laundry rooms. Some of our favorite damp-rated outdoor fans are the Kennicott modern fan, the Mill Valley farmhouse fan, and the Port Royale rustic fan.
What is a Wet-Rated Ceiling Fan?
Wet-rated outdoor ceiling fans are designed and engineered to withstand direct contact with water and moisture, which makes them ideal for gazebos and pergolas.