If you have the luxury of caching the file once when the process starts, that method may be faster. Furthermore I'm using a buffer at the end of the file for new entries (cache 1) and a read/write through cache (cache 2) to make things more pleasant. Yes, I have the file name and the URL stored in the database and the URL is the actual URL that points to the file which is located in the File System. So, that's what I did. There are many occasions when you want to save data in form of objects. The change could be much dynamic and it happens frequently. 3. Your help is highly appreciated. as well as both src and tgt flat file load on local server example trying to load both on local server directory instead off ftp will also bring result faster. It all depends on the volume of the data. Data is being appended to the .file every 20-39 mins. Best of MyISAM and InnoDB (Please Read This One First) Obviously that large of a file can not possibly be read into memory all at once, so that is not an option. For instance, say you are reading a blog post together with its comments in a document-oriented database. You should change your DataBase design accordingly. You might not want the user to access the database directly. Most people ask why is database so faster when compared to flat file entries of data. Creating a REST API and having your web app use the REST API to do all interactions with your database OR querying your database directly (i.e. How do I go about doing that? Oracle database direct path reads are supposed to be faster than db file scattered reads. Sub Read_File() Dim lines = File.ReadAllLines(MyfileName) Total_recs = lines.Count Dim parsed = (From line In lines Select New With {.Field1 = Mid(line, 46, 11), .Field2 = Mid(line, 62, 6), .Field3 = Mid(line, 73, 2)}) End Sub. Although now I am trying to read two large csv files in the same time, compare data and, if a match is found > write data to another new file. You may have to convert the files to blob in order to store them in the database. Most databases are good at handling concurrent access, all you need to make sure is that you open a connection when you need to and close it afterwards. You should use Primary Key for searching the data. The simplest case is the one of log files; files in which records are only appended and never deleted. While this is much faster than even locally attached Flash SSD, it's not nearly as fast as DRAM or byte-oriented data access on PMEM. In which you should not need to search such data with like operator. Reading the database is much faster: ... PyTables is a Python binding for the HDF5 database/file standard. About the caching of position and length - I tend to disagree. Yes we cannot read xlsx file without installing office 2007. It is freeware. Direct data import won’t work at that time. There are a lot of situations where the file is locked for reading, and in doing so the mutex problem is not an issue. Append only. and. What if you have a file which contains 10000000 rows, and you have some validation after reading each single line, and need to parse using certain programming logic. advice? This is all very well, but how about something that reads a file in one gulp into a varchar or XML datatype? 2) enforce no-duplication of key field Its best to access your files using a server-side script for security reasons, I think. It depends, though, on if and when you cache the .ini file. I want to read date from the txt file and save the records into the sql database table. Thanks a lot in advance. let me know from your experience. For more information, see Working with QVD files. What is faster performance wise? loading data directly from DB Tables and TGT desgined without key or constraint..perform bulk load u will get result faster. Archive tables and indexes that you’re no longer using. - El Forum - 03-10-2009 [eluser]drewbee[/eluser] Keep it in the database, and use query cache. I need to read content of large files up to 50 mb and these are ai files or can be of nay other type , when using openrowset , it reads the file but truncates it in middle. Term: Major Functions of Index Definition: 1) Enable the direct access to a record. If you use these files with the common file handling functions, you soon go mad because the program is running very s-l-o-w-l-y. Create the ufsReadfileAsString procedure and try something like… 1. Reading data from a file without starting from the beginning. That's really the question isn't? But there is solution for this. Retrieves records FASTER. Are Oracle Direct Path Reads Faster Than DB File Scattered Reads? Optimized mode is about 10 times faster than standard mode, or about 100 times faster than loading the database in the ordinary fashion. You use only a very small config file and you don't need it faster. Select all Open in new window. How can you make a MyISAM table's .MYD faster to read? The best way to confirm this is to benchmark both. We can fetch data into D3 by different methods, we can directly pull the data from CSV files by using d3.csv() function or by calling AJAX function and passing the data object to the D3 JS charts. Reading from PHP file or Database (which is faster?) Select dbo. Often, the comments will be saved together with the post itself. 4. Depending on your hardware and operating system, you should see that reads from the test1.db database file are about 35% faster than reads from individual files in the test1.dir or test1.tree folders. Reading a file into a SQL Server data type. job: lots of image links to be displayed on a page. What a great question, thank you for asking. It is specifically designed and developed to enhance the performance of I/O operations and make the best possible use of the available hardware. Currently i am reading data which is stored in .file in the format (abc|def|ghi|jkl|....|)using array and display the required data from the array as report data. View is faster then select from table. 2. I want to use ASP.Net Web application, C#. Note: Please Execute tst.sql in MS-SQL. Like Operator reduce the performance. Hi Eugen, I tried reading a file with Scanner and it works like a charm. It's more secure than saving in a file system. In this diagram, the entire block is being read from PMEM into DRAM, which is functionally the same as Flash SSD or spinning disk from a READ perspective. An object is a memory stream, which is hard to write using the normal methods. In this article, I show how you can save objects in a database and read back from the database. Here is the link to download engine. Reading and writing are done directly from the database files on the disk ; Cross-platform database file format. CI serializes the result object and stores it in a file, so that exact same thing is pulled back. But sometimes you have big databases, large files, and you have to look at them all the time while the program is executing. Perhaps you need to extract data from HTML, XHTML or some other format. Term: Index Definition: Data structure that improves the speed of data retrieval. 35% faster reading and writing compared to the File System; No intermediary server required. Make it smaller. Find answers to Reading Writing File or Query Update Database - Which one is faster in .Net from the expert community at Experts Exchange Of course the speed of the underlying disk subsystem's also plays a major role in increasing database speed. using whatever typical object your language uses to query a database such as JDBC for Java)? Thanks for your reply. Some odd answers so far. Hello Which one process faster and takes low cpu load to complete the job. On average, my database queries take about 0.005 seconds. Make the drives faster. Reading a database is much faster than reading text files or xml files, especially if you have a large number of records. I'm seeing two line of thoughts First says oracle is faster coz of its database capabilities It does a very good job of speeding up analytics and generating output faster. I'd imagine that it would take considerably longer than that to locate a file on the disk, read it, and then search it. Posted on 30-Mar-2016 by Craig Shallahamer, craig@orapub.com . Tune your storage. 1st way) write all the links in a text file per line .. and loop through that text file. Cons of Database. Microsoft has provided 'Microsoft Access database engine' to support reading of office 2007 files without actually installing the software. (Keep track of record's location on disk). If your objective is wall time, then that is what we should measure. Generally it's quicker to make a database call, as some data is cached in RAM, and the data is also indexed. a) Performing all the operations/transformations over a flat file as a source (location is server directory on Windows machine) b) Or first dumping the data into a oracle table and then doing the subsequent operations Pl. ufsReadfileAsString ('MyPath', 'MyFileName') Writing out a file. Is there any way to read the file fully and then insert it into database , I have both varchar(max) and varbinary(max) columns in my table. This code shows how to save objects in a database. This means a file written on one machine can be copied to and used on a different machine with a different architecture; There are many more reasons for its popularity. Each one of those XML files would be edited, deleted and may be new version created and so on. There are many reasons behind that, one of them is indexing. This way, you are now checking a file for each individual query. For the volumes you mention, a database will probably be faster since you can index the tables. But are direct reads really faster? sonali Cheers, This means that it will be faster to retrieve all of them together, as they are stored in the same place and you do not have to perform a join. Read it from somewhere else. How to Read Data from Disk Faster. JSON is a way of representing data as somewhat structured text. Ah, I wish it was as easy as typing that three-word sentence. With this: ALTER TABLE mytable ROW_FORMAT=Fixed; I wrote about this in my past posts. Use Enterprise Edition’s data compression to shrink the size of your database on disk. When read, a MyISAM table's indexes can be read once from the .MYI file and loaded in the MyISAM Key Cache (as sized by key_buffer_size). Can you please help me. Forum - 03-10-2009 [ eluser ] drewbee [ /eluser ] Keep it in a file can not be. 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