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  • Benefits of an Online SEO Course

    SEO (Search Engine Optimization) is the process one takes in optimizing their website to be on the top of search results for Search Engines. As a new online business owner doing SEO may seem to be a daunting task.

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  • How To Calculate SEO ROI

    Investing in Search Engine Optimization should be a weighed decision like other marketing expenses. Calculating ROI for SEO can be more difficult than other advertising because costs and returns are often not as concrete, but with some ballpark figures, estimating your SEO ROI becomes a doable task.

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  • How Local SEO Can Improve Your Business

    Local search engine optimization is a good first step to conquer the search engines and present your business. This article summarizes some of the positive aspects of Local SEO, and why businesses should not scared to embrace the internet as a new marketing medium.

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  • Using Competition Information to Plan Your SEO Strategy

    There is no doubt about it, there is no better feeling than beating out your competition in search engine placement. It generally takes a certain length of time, but that day when you climb one step above your competition is a sweet victory. The easiest way to do this is to analyse just what exactly your competition is doing, and do it better.

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  • Developing Schema Compare for Oracle (Part 1)

    - by Simon Cooper
    SQL Compare is one of Red Gate's most successful SQL Server tools; it allows developers and DBAs to compare and synchronize the contents of their databases. Although similar tools exist for Oracle, they are quite noticeably lacking in the usability and stability that SQL Compare is known for in the SQL Server world. We could see a real need for a usable schema comparison tools for Oracle, and so the Schema Compare for Oracle project was born. Over the next few weeks, as we come up to release of v1, I'll be doing a series of posts on the development of Schema Compare for Oracle. For the first post, I thought I would start with the main pitfalls that we stumbled across when developing the product, especially from a SQL Server background. 1. Schemas and Databases The most obvious difference is that the concept of a 'database' is quite different between Oracle and SQL Server. On SQL Server, one server instance has multiple databases, each with separate schemas. There is typically little communication between separate databases, and most databases are no more than about 1000-2000 objects. This means SQL Compare can register an entire database in a reasonable amount of time, and cross-database dependencies probably won't be an issue. It is a quite different scene under Oracle, however. The terms 'database' and 'instance' are used interchangeably, (although technically 'database' refers to the datafiles on disk, and 'instance' the running Oracle process that reads & writes to the database), and a database is a single conceptual entity. This immediately presents problems, as it is infeasible to register an entire database as we do in SQL Compare; in my Oracle install, using the standard recommended options, there are 63975 system objects. If we tried to register all those, not only would it take hours, but the client would probably run out of memory before we finished. As a result, we had to allow people to specify what schemas they wanted to register. This decision had quite a few knock-on effects for the design, which I will cover in a future post. 2. Connecting to Oracle The next obvious difference is in actually connecting to Oracle – in SQL Server, you can specify a server and database, and off you go. On Oracle things are slightly more complicated. SIDs, Service Names, and TNS A database (the files on disk) must have a unique identifier for the databases on the system, called the SID. It also has a global database name, which consists of a name (which doesn't have to match the SID) and a domain. Alternatively, you can identify a database using a service name, which normally has a 1-to-1 relationship with instances, but may not if, for example, using RAC (Real Application Clusters) for redundancy and failover. You specify the computer and instance you want to connect to using TNS (Transparent Network Substrate). The user-visible parts are a config file (tnsnames.ora) on the client machine that specifies how to connect to an instance. For example, the entry for one of my test instances is: SC_11GDB1 = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = simonctest)(PORT = 1521)) ) (CONNECT_DATA = (SID = 11gR1db1) ) ) This gives the hostname, port, and SID of the instance I want to connect to, and associates it with a name (SC_11GDB1). The tnsnames syntax also allows you to specify failover, multiple descriptions and address lists, and client load balancing. You can then specify this TNS identifier as the data source in a connection string. Although using ODP.NET (the .NET dlls provided by Oracle) was fine for internal prototype builds, once we released the EAP we discovered that this simply wasn't an acceptable solution for installs on other people's machines. Due to .NET assembly strong naming, users had to have installed on their machines the exact same version of the ODP.NET dlls as we had on our build server. We couldn't ship the ODP.NET dlls with our installer as the Oracle license agreement prohibited this, and we didn't want to force users to install another Oracle client just so they can run our program. To be able to list the TNS entries in the connection dialog, we also had to locate and parse the tnsnames.ora file, which was complicated by users with several Oracle client installs and intricate TNS entries. After much swearing at our computers, we eventually decided to use a third party Oracle connection library from Devart that we could ship with our program; this could use whatever client version was installed, parse the TNS entries for us, and also had the nice feature of being able to connect to an Oracle server without having any client installed at all. Unfortunately, their current license agreement prevents us from shipping an Oracle SDK, but that's a bridge we'll cross when we get to it. 3. Running synchronization scripts The most important difference is that in Oracle, DDL is non-transactional; you cannot rollback DDL statements like you can on SQL Server. Although we considered various solutions to this, including using the flashback archive or recycle bin, or generating an undo script, no reliable method of completely undoing a half-executed sync script has yet been found; so in this case we simply have to trust that the DBA or developer will check and verify the script before running it. However, before we got to that stage, we had to get the scripts to run in the first place... To run a synchronization script from SQL Compare we essentially pass the script over to the SqlCommand.ExecuteNonQuery method. However, when we tried to do the same for an OracleConnection we got a very strange error – 'ORA-00911: invalid character', even when running the most basic CREATE TABLE command. After much hair-pulling and Googling, we discovered that Oracle has got some very strange behaviour with semicolons at the end of statements. To understand what's going on, we need to take a quick foray into SQL and PL/SQL. PL/SQL is not T-SQL In SQL Server, T-SQL is the language used to interface with the database. It has DDL, DML, control flow, and many other nice features (like Turing-completeness) that you can mix and match in the same script. In Oracle, DDL SQL and PL/SQL are two completely separate languages, with different syntax, different datatypes and different execution engines within the instance. Oracle SQL is much more like 'pure' ANSI SQL, with no state, no control flow, and only the basic DML commands. PL/SQL is the Turing-complete language, but can only do DML and DCL (i.e. BEGIN TRANSATION commands). Any DDL or SQL commands that aren't recognised by the PL/SQL engine have to be passed back to the SQL engine via an EXECUTE IMMEDIATE command. In PL/SQL, a semicolons is a valid token used to delimit the end of a statement. In SQL, a semicolon is not a valid token (even though the Oracle documentation gives them at the end of the syntax diagrams) . When you execute the command CREATE TABLE table1 (COL1 NUMBER); in SQL*Plus the semicolon on the end is a command to SQL*Plus to execute the preceding statement on the server; it strips off the semicolon before passing it on. SQL Developer does a similar thing. When executing a PL/SQL block, however, the syntax is like so: BEGIN INSERT INTO table1 VALUES (1); INSERT INTO table1 VALUES (2); END; / In this case, the semicolon is accepted by the PL/SQL engine as a statement delimiter, and instead the / is the command to SQL*Plus to execute the current block. This explains the ORA-00911 error we got when trying to run the CREATE TABLE command – the server is complaining about the semicolon on the end. This also means that there is no SQL syntax to execute more than one DDL command in the same OracleCommand. Therefore, we would have to do a round-trip to the server for every command we want to execute. Obviously, this would cause lots of network traffic and be very slow on slow or congested networks. Our first attempt at a solution was to wrap every SQL statement (without semicolon) inside an EXECUTE IMMEDIATE command in a PL/SQL block and pass that to the server to execute. One downside of this solution is that we get no feedback as to how the script execution is going; we're currently evaluating better solutions to this thorny issue. Next up: Dependencies; how we solved the problem of being unable to register the entire database, and the knock-on effects to the whole product.

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  • SEO for single-page content-less Web App

    - by brillout.com
    as written in the title the website on which I try to do Search Engine Optimization has following two properties: doesn't have any content in the SEO sense: it doesn't hold any information and only offers functionality consists of only one page/URL since most of the SEO tips/tricks I read are based on content how do I perform SEO optimization on such a website? for more info: the website is basically just a timer/alarm/stopwatch

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  • Will Outsourcing Your SEO Increase Your MLM Leads?

    Search engine optimization or SEO is absolutely booming in the MLM home business industry right now. Configuring your MLM website to look attractive to search engines will raise your page rank, put you higher in search results, and increase your organic traffic, and thus MLM lead generation.

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  • What is Light Peak

    - by Jonathan.
    I've heard this a lot recently, todo with Apple and Intel. Some says it's a protocol, others say it's fibre optic, and others say it's copper. One source even said it was a "wireless wire". Apparently it can carry data, but not video streams, surely the cable can't know the difference between 1s and 0s representing data, and 1s and 0s representing video streams. Or it will replace all the wires we currently have except power, another place said it is for inside laptops. Those are just examples so I haven't given any sources, I just want to know what on Earth Light Peak is?

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  • Bad Effects From Bad Neighbors

    There are websites who make use of ethical SEO but still don't reach the top positions of the search engine results. The main reason why this situation happens can be chosen from the three: sandbox effect, over optimization or bad neighborhood.

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  • SEO - Definition & Purpose

    It stands for Search Engine Optimization. It is a process by which the website is ranked higher and promoted on a large scale and that leads to more business for the owner. In order to understand what this process is, you need to understand some details pertaining to search engines and websites. Now almost every company and trader has built their websites to promote their business since they can make a global approach through the internet.

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  • Using a Keyword Tool

    In your bid to become a world class Online Marketing Entrepreneur, you will no doubt decide at some stage to use the powerful services of Google or another search engine. Central to your success with these services will be your ability to identify good words for your ad campaigns.

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  • Blog Commenting - Is it Really Useful in SEO?

    The easy answer to the question is, yes, blog commenting is incredibly useful as pertains to your internet search engine optimization. The relevant question is how is it useful? Furthermore, how can you make sure that anyone commenting on a blog that is related to a service that you provide give you the traffic you deserve?

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  • Does a mature agile team requires any management?

    - by ashy_32bit
    After a recent heated debate over Scrum, I realized my problem is that I think of management as a quite unnecessary and redundant activity in a fully agile team. I believe a mature Agile team does not require management or any non-technical decision making process whatsoever. To my (apparently erring) eyes it is more than obvious that the only one suitable and capable of managing a mature development team is their coach (who is the most technically competent colleague with proper communication skills). I can't imagine how a Scrum master can contribute to such a team. I am having great difficulty realizing and understanding the value of such things in Scrum and the manager as someone who is not a veteran developer but is well skilled in planning the production cycles when a coach exists in the team. What does that even mean? How on earth can someone with no edge-skills of development manage a highly technical team? Perhaps management here means something else? I see management as a total waste of time and a by-product of immaturity. In my understanding a mature team is fully self-managing. Apparently I'm mistaken since many great people say the contrary but I can't convince myself.

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  • The 4 'P's of SEO

    Search engine optimization (SEO) and its role in building a successful online business is about the 4 'P's. Passion, personal relationships, process and persistence. Like everything in life, rewards follow process and persistence. But those alone will not work without good personal relationships which build trust, and passion which is really about caring about what you are offering and to whom you are offering it.

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  • Achieving certain rendering styles

    - by milesmeow
    I'm trying to assess the difficulty of creating a rendering style that is more like the game Okami and the Quake mods (as shown on this page...search for 'okami','quake npr'). Here's a better page describing the Quake rendering mod. Can a game engine such as Unity be used and programmed to achieve these kind of rendering styles? I'm doing research and am totally new to this so any insight into this would help tremendously.

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  • How can I upgrade my server's kernel without rebooting?

    - by Oli
    This is a loaded question because I'm already aware of, and am very interested in ksplice. The problem is that since they were bought by Oracle, they have been forced to pull numerous server distributions from the offerings. The answer isn't as simple as it once was. I noticed a question on Unix.SE that states: You can build your own ksplice patches to dynamically load into your own kernel Great! But how?! I've installed the free ksplice package in the repo on my desktop (not ksplice-uptrack which is non-free) and now want to generate and apply updates. What's the process? Are there any scripts out there to automate the process? Moreover, if all the machinery required for rebootless upgrades is sitting there in the kernel (and ksplice package), why on earth aren't we taking advantage of it by default? Note 1: I am happy for a solution beside ksplice but it has to deliver the same thing: rolling updates to the kernel that can be applied without rebooting the server. Note 2: I'll say it again; the main ksplice "service" does not support Ubuntu Server. It used to but it doesn't any more. When I talk about wanting to use ksplice, I'm talking about the open source tools in the ksplice package. Any answer that talks about ksplice-uptrack is probably not what I'm after as this is the part that integrates directly with aforementioned "service".

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