Breast cancer may cause swollen axillary lymph nodes since the lymph vessels of the breast drain into the lymph nodes of the armpit. These nodes become enlarged when cancer cells spread beyond the breast tissue.
Relational database. (Redirected from Database constraints) A relational database is a digital database whose organization is based on the relational model of data, as proposed by E. F. Codd in 1970. The various software systems used to maintain relational databases are known as a relational database management system (RDBMS).
Definition - What does Database Repository mean? A database repository is a logical, but also sometimes physical grouping of data from related but separate databases. This is usually done when there is a 'higher purpose' for the data, but the data items needed to do this reside on different databases.