All the vouchers have been fully checked out for legitimacy, and can be used by anybody unless stated. Yet remember items can be cheaper elsewhere even after the discount. It’s good to always compare prices before paying. Tesco £10 off £50 spend Online code New customers can get £10 off a £50+ spend off a... 

What O2 customers get Theres a whole range of reasons to choose O2 including: - Award winning customer service from our UK call centres - Free calls on many tariffs to other O2 customers, with over 20 million of them you’ll definitely know a few - Access to exclusive handsets - VIP treatment for... 

Tuning individual Oracle SQL statements The acronym SQL stands for Structured Query Language. SQL is an industry standard database query language that was adopted in the mid-1980s. It should not be confused with commercial products such as Microsoft SQL Server or open source products such as MySQL, both of which use... 

Why and when should one tune? One of the biggest responsibilities of a DBA is to ensure that the Oracle database is tuned properly. The Oracle RDBMS is highly tunable and allows the database to be monitored and adjusted to increase its performance. One should do performance tuning for the following reasons: The... 

Do not index every column in the table – have only those indexes, which are required. Distribute your data to parrallelise the IO operations among multiple disks especially for those tables which have lots of IO’s. Try to avoid large data retrievals, since if the data being retrieved from a table is more... 

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