Differences

This shows you the differences between two versions of the page.

--- tanszek:oktatas:techcomm:semantics [2024/10/07 18:17] – knehez
+++ tanszek:oktatas:techcomm:semantics [2024/10/07 18:19] (current) – knehez
@@ Line 4: / Line 4: @@
 [[Relations]]
+Defines relations as connections between sets, describing them using Cartesian products, matrices, and graphs. Relations can be binary, homogeneous, or inversed, and are used to express logical relationships between elements.
 [[Data]]
+Explains data as encoded information that holds meaning, created through abstraction, and represented by variables in programming. It covers data types like logical, integer, float, array, and structures.
 [[XML]]
+XML: A flexible, text-based meta-language used to describe data structures, allowing users to define custom tags.
 [[XML 2]]
+Expands on XML concepts with examples, covering special characters, CDATA sections, namespaces, and the importance of well-formed documents for syntactic validation by XML interpreters.
 [[DTD]]
+Defines the structure and constraints of XML documents, allowing syntactic validation. DTD can specify element types, sequences, and attributes, ensuring that XML data follows a prescribed format.