What is static pattern and why it is not used in transaction validation and why execution pattern is used through the scripting language i am a bit confused need a clear explanation.
What is static pattern
Each type of Bitcoin transaction has a certain pattern, the chunk of data can be broken down into pieces. The size, form and sequence of these these pieces are a pattern. Static means this pattern does not change from one transaction to another of the same type. All transactions of the same type have the same pattern.
why it is not used in transaction validation
why execution pattern is used through the scripting language
Bitcoin's scripting language allows for flexibility in creating new types of transactions. Each different script is a rule that specifies how the network can recognise that someone is entitled to spend money in a transaction output. Nodes check that scripts are well-formed and that people spending outputs have provided data that satisfies that script (e.g. proving they know a secret number called a private-key). All this checking is called validation (which is very different from confirmation - people sometimes get confused about this).