Teradata-REPLACE VIEW-Create or Replace View. REPLACE VIEW statement creates a new view, or re-creates the existing view in Teradata.Quick Example : Create a new view. If the view already exists, it will be replaced with the new definition:eradata-REPLACE VIEW-Create or Replace View. REPLACE VIEW statement creates a new view, or re-creates the existing view in Teradata. Quick Example : Create a new view.
retinoblastoma is a disease in which malignant cancer cells form in the tissues of the retina the retina is the nerve tissue that lines the inside of the back of the eye the retina senses light and sends images to the brain by way of the optic nerven intraocular retinoblastoma cancer is found in one or both eyes and may be in the retina only or may also be in other parts of the eye such as the choroid ciliary body or part of the optic nerve cancer has not spread to tissues around the outside of the eye or to other parts of the body
This form of cancer develops in the retina, which is the specialized light-sensitive tissue at the back of the eye that detects light and color. In most children with retinoblastoma, the disease affects only one eye. However, one out of three children with retinoblastoma develops cancer in both eyes.The most common first sign of retinoblastoma is a visible whiteness in the pupil called cat's eye reflex or leukocoria.n the non-germinal form of retinoblastoma, typically only one eye is affected and there is no family history of the disease. Affected individuals are born with two normal copies of the RB1 gene. Then, usually in early childhood, both copies of the RB1 gene in retinal cells acquire mutations or are lost.